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-</head>
-
-<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
-
-<a name="Top"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="settitle">Xlibscm
-</h1>
-
-
-
-<table class="menu" border="0" cellspacing="0">
-<tr><td align="left" valign="top"><a href="#SEC1">1. Xlibscm</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC2">2. Display and Screens</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC3">3. Drawables</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC7">4. Graphics Context</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC9">5. Cursor</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC10">6. Colormap</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC11">7. Rendering</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC14">8. Images</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC15">9. Event</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC16">Procedure and Macro Index</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-</table>
-
-<hr size="1">
-<a name="Xlibscm"></a>
-<a name="SEC1"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#Top" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC2" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[ &lt;&lt; ]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC2" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 1. Xlibscm </h1>
-
-<p><em>Xlibscm</em> is a SCM interface to <em>X</em>.
-<a name="IDX1"></a>
-The
-&lt;A HREF=&quot;http://www.x.org/&quot;&gt;
-X Window System
-&lt;/A&gt;
-is a network-transparent window system that was
-designed at MIT.
-&lt;A HREF=&quot;scm_toc.html&quot;&gt;
-SCM
-&lt;/A&gt;
-is a portable Scheme implementation written in C.
-The interface can be compiled into SCM or, on those platforms supporting
-dynamic linking, compiled separately and loaded with <code>(require
-'Xlib)</code>.
-<a name="IDX2"></a>
-</p>
-
-<p>Much of this X documentation is dervied from:
-</p>
-<p align="center"> Xlib - C Language X Interface
-</p><p align="center"> X Consortium Standard
-</p><p align="center"> X Version 11, Release 6.3
-</p>
-<p>The X Window System is a trademark of X Consortium, Inc.
-</p>
-<p>TekHVC is a trademark of Tektronix, Inc.
-</p>
-
-
-<p>Copyright (C) 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X
-Consortium
-</p>
-<p>Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the
-&quot;Software&quot;), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-</p>
-<p>The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-</p>
-<p>THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-</p>
-<p>Except as contained in this notice, the name of the X Consortium shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization from
-the X Consortium.
-</p>
-
-
-
-<p>Copyright (C) 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
-Digital Equipment Corporation
-</p>
-<p>Portions Copyright (C) 1990, 1991 by Tektronix, Inc.
-</p>
-<p>Permission to use, copy, modify and distribute this documentation for
-any purpose and without fee is hereby granted, provided that the above
-copyright notice appears in all copies and that both that copyright
-notice and this permission notice appear in all copies, and that the
-names of Digital and Tektronix not be used in in advertising or
-publicity pertaining to this documentation without specific, written
-prior permission. Digital and Tektronix makes no representations about
-the suitability of this documentation for any purpose. It is provided
-&quot;as is&quot; without express or implied warranty.
-</p>
-
-<hr size="6">
-<a name="Display-and-Screens"></a>
-<a name="SEC2"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC1" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC1" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 2. Display and Screens </h1>
-
-<dl>
-<dt><u>Function:</u> <b>x:open-display</b><i> display-name</i>
-<a name="IDX3"></a>
-</dt>
-<dd><p><var>display-name</var> Specifies the hardware display name, which determines
-the display and communications domain to be used. On a POSIX-conformant
-system, if the display-name is #f, it defaults to the value of the
-<var>DISPLAY</var> environment variable.
-</p>
-<p>The encoding and interpretation of <var>display-name</var> is
-implementation-dependent. On POSIX-conformant systems, the
-<var>display-name</var> or <var>DISPLAY</var> environment variable can be a string
-in the format:
-</p>
-<dl>
-<dt><u>Special Form:</u> <b>hostname:number.screen-number</b>
-<a name="IDX4"></a>
-</dt>
-<dd><p><var>hostname</var> specifies the name of the host machine on which the
-display is physically attached. Follow the <var>hostname</var> with either a
-single colon (:) or a double colon (::).
-</p>
-<p><var>number</var> specifies the number of the display server on that host
-machine. You may optionally follow this display number with a period
-(.). A single CPU can have more than one display. Multiple displays
-are usually numbered starting with zero.
-</p>
-<p><var>screen-number</var> specifies the screen to be used on that server.
-Multiple screens can be controlled by a single X server. The
-<var>screen-number</var> sets an internal variable that can be accessed by
-using the x:default-screen procedure.
-</p></dd></dl>
-</dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:close</b><i> display</i>
-<a name="IDX5"></a>
-</dt>
-<dd><p><var>display</var> specifies the connection to the X server.
-</p>
-<p>The <code>x:close</code> function closes the connection to the X server for
-the <var>display</var> specified and destroys all windows, resource IDs
-(Window, Font, Pixmap, Colormap, Cursor, and GContext), or other
-resources that the client has created on this display, unless the
-close-down mode of the resource has been changed (see
-<code>x:set-close-down-mode</code>). Therefore, these windows, resource IDs,
-and other resources should not be used again or an error will be
-generated. Before exiting, you should call <var>x:close-display</var> or
-<var>x:flush</var> explicitly so that any pending errors are reported.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:protocol-version</b><i> display</i>
-<a name="IDX6"></a>
-</dt>
-<dd><p>Returns cons of the major version number (11) of the X protocol
-associated with the connected <var>display</var> and the minor protocol
-revision number of the X server.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:server-vendor</b><i> display</i>
-<a name="IDX7"></a>
-</dt>
-<dd><p>Returns a string that provides some identification of the owner of the X
-server implementation. The contents of the string are
-implementation-dependent.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:vendor-release</b><i> display</i>
-<a name="IDX8"></a>
-</dt>
-<dd><p>Returns a number related to a vendor's release of the X server.
-</p></dd></dl>
-
-
-<p>A display consists of one or more <em>Screen</em>s. Each screen has a
-<em>root-window</em>, <em>default-graphics-context</em>, and <em>colormap</em>.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:screen-count</b><i> display</i>
-<a name="IDX9"></a>
-</dt>
-<dd><p>Returns the number of available screens.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:default-screen</b><i> display</i>
-<a name="IDX10"></a>
-</dt>
-<dd><p>Returns the default screen number specified by the <code>x:open-display</code>
-function. Use this screen number in applications which will use only a
-single screen.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:root-window</b><i> display screen-number</i>
-<a name="IDX11"></a>
-</dt>
-<dt><u>Function:</u> <b>x:root-window</b><i> display</i>
-<a name="IDX12"></a>
-</dt>
-<dd><p><var>screen-number</var>, if givien, specifies the appropriate screen number
-on the host server. Otherwise the default-screen for <var>display</var> is
-used.
-</p>
-<p>Returns the root window for the specified <var>screen-number</var>. Use
-<code>x:root-window</code> for functions that need a drawable of a particular
-screen or for creating top-level windows.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:root-window</b><i> window</i>
-<a name="IDX13"></a>
-</dt>
-<dd><p>Returns the root window for the specified <var>window</var>'s screen.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:default-colormap</b><i> display screen-number</i>
-<a name="IDX14"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-colormap</b><i> display</i>
-<a name="IDX15"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-colormap</b><i> window</i>
-<a name="IDX16"></a>
-</dt>
-<dd><p>Returns the default colormap of the specified screen.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:default-ccc</b><i> display screen-number</i>
-<a name="IDX17"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-ccc</b><i> display</i>
-<a name="IDX18"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-ccc</b><i> window</i>
-<a name="IDX19"></a>
-</dt>
-<dd><p>Returns the default Color-Conversion-Context (ccc) of the specified
-screen.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:default-gc</b><i> display screen-number</i>
-<a name="IDX20"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-gc</b><i> display</i>
-<a name="IDX21"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-gc</b><i> window</i>
-<a name="IDX22"></a>
-</dt>
-<dd><p>Returns the default graphics-context of the specified screen.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-depths</b><i> display screen-number</i>
-<a name="IDX23"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-depths</b><i> display</i>
-<a name="IDX24"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-depths</b><i> window</i>
-<a name="IDX25"></a>
-</dt>
-<dd><p>Returns an array of depths supported by the specified screen.
-</p></dd></dl>
-
-<p>The <em>Visual</em> type describes possible colormap depths and
-arrangements.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:default-visual</b><i> display screen-number</i>
-<a name="IDX26"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-visual</b><i> display</i>
-<a name="IDX27"></a>
-</dt>
-<dt><u>Function:</u> <b>x:default-visual</b><i> window</i>
-<a name="IDX28"></a>
-</dt>
-<dd><p>Returns the default Visual type for the specified screen.
-</p>
-<a name="IDX29"></a>
-<a name="IDX30"></a>
-</dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:make-visual</b><i> display depth class</i>
-<a name="IDX31"></a>
-</dt>
-<dt><u>Function:</u> <b>x:make-visual</b><i> window depth class</i>
-<a name="IDX32"></a>
-</dt>
-<dd><p>The integer <var>depth</var> specifies the number of bits per pixel.
-The <var>class</var> argument specifies one of the possible
-visual classes for a screen:
-</p><ul>
-<li> x:Static-Gray
-</li><li> x:Static-Color
-</li><li> x:True-Color
-</li><li> x:Gray-Scale
-</li><li> x:Pseudo-Color
-</li><li> x:Direct-Color
-</li></ul>
-
-<p><code>X:make-visual</code> returns a visual type for the screen specified by
-<var>display</var> or <var>window</var> if successful; #f if not.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:visual-class</b><i> visual</i>
-<a name="IDX33"></a>
-</dt>
-<dt><u>Function:</u> <b>x:visual-class</b><i> screen</i>
-<a name="IDX34"></a>
-</dt>
-<dt><u>Function:</u> <b>x:visual-class</b><i> display</i>
-<a name="IDX35"></a>
-</dt>
-<dd><p>Returns the (integer) visual class of its argument.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:visual-geometry</b><i> visual</i>
-<a name="IDX36"></a>
-</dt>
-<dt><u>Function:</u> <b>x:visual-geometry</b><i> screen</i>
-<a name="IDX37"></a>
-</dt>
-<dt><u>Function:</u> <b>x:visual-geometry</b><i> display</i>
-<a name="IDX38"></a>
-</dt>
-<dd><p>Returns a list of the:
-</p><ul>
-<li> red_mask
-</li><li> green_mask
-</li><li> blue_mask
-</li><li> colormap_size
-</li></ul>
-</dd></dl>
-
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-cells</b><i> display screen-number</i>
-<a name="IDX39"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-cells</b><i> display</i>
-<a name="IDX40"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-cells</b><i> window</i>
-<a name="IDX41"></a>
-</dt>
-<dd><p>Returns the number of entries in the default colormap.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-depth</b><i> display screen-number</i>
-<a name="IDX42"></a>
-</dt>
-<dd><p>Returns the depth of the root window of the specified screen.
-</p><dl>
-<dt><u>Function:</u> <b>x:screen-depth</b><i> display</i>
-<a name="IDX43"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-depth</b><i> window</i>
-<a name="IDX44"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-depth</b><i> visual</i>
-<a name="IDX45"></a>
-</dt>
-<dd><p>Returns the depth of argument.
-</p>
-<a name="IDX46"></a>
-<p>The <em>depth</em> of a window or pixmap is the number of bits per pixel it has.
-The <em>depth</em> of a graphics context is the depth of the drawables it can be
-used in conjunction with graphics output.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-size</b><i> display screen-number</i>
-<a name="IDX47"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-size</b><i> display</i>
-<a name="IDX48"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-size</b><i> window</i>
-<a name="IDX49"></a>
-</dt>
-<dd><p>Returns a list of integer height and width of the screen in pixels.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-dimensions</b><i> display screen-number</i>
-<a name="IDX50"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-dimensions</b><i> display</i>
-<a name="IDX51"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-dimensions</b><i> window</i>
-<a name="IDX52"></a>
-</dt>
-<dd><p>Returns a list of integer height and width of the screen in millimeters.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-white</b><i> display screen-number</i>
-<a name="IDX53"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-white</b><i> display</i>
-<a name="IDX54"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-white</b><i> window</i>
-<a name="IDX55"></a>
-</dt>
-<dd><p>Returns the white pixel value of the specified screen.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:screen-black</b><i> display screen-number</i>
-<a name="IDX56"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-black</b><i> display</i>
-<a name="IDX57"></a>
-</dt>
-<dt><u>Function:</u> <b>x:screen-black</b><i> window</i>
-<a name="IDX58"></a>
-</dt>
-<dd><p>Returns the black pixel value of the specified screen.
-</p></dd></dl>
-
-</dd></dl>
-</dd></dl>
-<hr size="6">
-<a name="Drawables"></a>
-<a name="SEC3"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC2" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC4" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC2" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC7" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 3. Drawables </h1>
-
-<p>A <em>Drawable</em> is either a window or pixmap.
-</p>
-<table class="menu" border="0" cellspacing="0">
-<tr><td align="left" valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC5">3.2 Window Attributes</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-<tr><td align="left" valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
-</td></tr>
-</table>
-
-
-<hr size="6">
-<a name="Windows-and-Pixmaps"></a>
-<a name="SEC4"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC3" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC5" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC7" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h2 class="section"> 3.1 Windows and Pixmaps </h2>
-
-<dl>
-<dt><u>Function:</u> <b>x:create-window</b><i> window position size border-width depth class visual field-name value &hellip;</i>
-<a name="IDX59"></a>
-</dt>
-<dd><p>Creates and returns an unmapped Input-Output subwindow for a specified
-parent <var>window</var> and causes the X server to generate a CreateNotify
-event. The created window is placed on top in the stacking order with
-respect to siblings. Any part of the window that extends outside its
-parent <var>window</var> is clipped. The <var>border-width</var> for an
-x:Input-Only window must be zero.
-</p>
-<p>The coordinate system has the X axis horizontal and the Y axis vertical
-with the origin [0, 0] at the upper-left corner. Coordinates are
-integral, in terms of pixels, and coincide with pixel centers. Each
-window and pixmap has its own coordinate system. For a window, the
-origin is inside the border at the inside, upper-left corner.
-</p>
-<p><var>Class</var> can be x:Input-Output, x:Input-Only, or x:Copy-From-Parent.
-For class x:Input-Output, the <var>visual</var> type and <var>depth</var> must be
-a combination supported for the screen. The <var>depth</var> need not be the
-same as the parent, but the parent must not be a window of class
-x:Input-Only. For an x:Input-Only window, the <var>depth</var> must be zero,
-and the <var>visual</var> must be one supported by the screen.
-</p>
-<p>The returned window will have the attributes specified by
-<var>field-name</var>s and <var>value</var>.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-window</b><i> window position size border-width border background</i>
-<a name="IDX60"></a>
-</dt>
-<dd><p>The returned window inherits its depth, class, and visual from its
-parent. All other window attributes, except <var>background</var> and
-<var>border</var>, have their default values.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:create-pixmap</b><i> drawable size depth</i>
-<a name="IDX61"></a>
-</dt>
-<dt><u>Function:</u> <b>x:create-pixmap</b><i> display size depth</i>
-<a name="IDX62"></a>
-</dt>
-<dd><p><var>size</var> is a list, vector, or pair of nonzero integers specifying the width
-and height desired in the new pixmap.
-</p>
-<p><var>x:create-pixmap</var> returns a new pixmap of the width, height, and
-<var>depth</var> specified. It is valid to pass an x:Input-Only window to the
-drawable argument. The <var>depth</var> argument must be one of the depths
-supported by the screen of the specified <var>drawable</var>.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:close</b><i> window</i>
-<a name="IDX63"></a>
-</dt>
-<dd><p>Destroys the specified <var>window</var> as well as all of its subwindows and
-causes the X server to generate a DestroyNotify event for each window.
-The window should not be used again. If the window specified by the
-<var>window</var> argument is mapped, it is unmapped automatically. The
-ordering of the DestroyNotify events is such that for any given window
-being destroyed, DestroyNotify is generated on any inferiors of the
-window before being generated on the window itself. The ordering among
-siblings and across subhierarchies is not otherwise constrained. If the
-<var>window</var> you specified is a root window, an error is signaled.
-Destroying a mapped <var>window</var> will generate x:Expose events on other
-windows that were obscured by the window being destroyed.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:close</b><i> pixmap</i>
-<a name="IDX64"></a>
-</dt>
-<dd><p>Deletes the association between the <var>pixmap</var> and its storage. The X
-server frees the pixmap storage when there are no references to it.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:window-geometry</b><i> drawable</i>
-<a name="IDX65"></a>
-</dt>
-<dd><p>Returns a list of:
-</p>
-<dl compact="compact">
-<dt> coordinates</dt>
-<dd><p><code>list</code> of x and y coordinates that define the location of the
-<var>drawable</var>. For a window, these coordinates specify the upper-left
-outer corner relative to its parent's origin. For pixmaps, these
-coordinates are always zero.
-</p></dd>
-<dt> size</dt>
-<dd><p><code>list</code> of the <var>drawable</var>'s dimensions (width and height). For
-a window, these dimensions specify the inside size, not including the
-border.
-</p></dd>
-<dt> border-width</dt>
-<dd><p>The border width in pixels. If the <var>drawable</var> is a pixmap, this is
-zero.
-</p></dd>
-<dt> depth</dt>
-<dd><p>The depth of the <var>drawable</var> (bits per pixel for the object).
-</p></dd>
-</dl>
-</dd></dl>
-
-
-<dl>
-<dt><u>Function:</u> <b>x:window-geometry-set!</b><i> window field-name value &hellip;</i>
-<a name="IDX66"></a>
-</dt>
-<dd><p>Changes the <em>Configuration</em> components specified by
-<var>field-name</var>s for the specified <var>window</var>.
-</p></dd></dl>
-
-
-<p>These are the attributes settable by <code>x:window-geometry-set!</code>.
-That these attributes are encoded by small integers - just like those
-of the next section. Be warned therefore that confusion of attribute
-names will likely not signal errors, just cause mysterious behavior.
-</p>
-<dl>
-<dt><u>Attribute:</u> <b>x:CWX</b>
-<a name="IDX67"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:CWY</b>
-<a name="IDX68"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:CW-Width</b>
-<a name="IDX69"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:CW-Height</b>
-<a name="IDX70"></a>
-</dt>
-<dd><p>The x:CWX and x:CYY members are used to set the window's x and y
-coordinates, which are relative to the parent's origin and indicate the
-position of the upper-left outer corner of the window. The x:CW-Width
-and x:CW-Height members are used to set the inside size of the window,
-not including the border, and must be nonzero. Attempts to configure a
-root window have no effect.
-</p>
-<p>If a window's size actually changes, the window's subwindows move
-according to their window gravity. Depending on the window's bit
-gravity, the contents of the window also may be moved
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Border-Width</b>
-<a name="IDX71"></a>
-</dt>
-<dd><p>The integer x:CW-Border-Width is used to set the width of the border in
-pixels. Note that setting just the border width leaves the outer-left
-corner of the window in a fixed position but moves the absolute position
-of the window's origin. It is an error to set the border-width
-attribute of an InputOnly window nonzero.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Sibling</b>
-<a name="IDX72"></a>
-</dt>
-<dd><p>The sibling member is used to set the sibling window for stacking
-operations.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Stack-Mode</b>
-<a name="IDX73"></a>
-</dt>
-<dd><p>The x:CW-Stack-Mode member is used to set how the window is to be
-restacked and can be set to x:Above, x:Below, x:Top-If, x:Bottom-If, or
-x:Opposite.
-</p></dd></dl>
-
-
-<p>If a sibling and a stack-mode are specified, the window is restacked as
-follows:
-</p>
-<dl compact="compact">
-<dt> <code>x:Above</code></dt>
-<dd><p>The window is placed just above the sibling.
-</p></dd>
-<dt> <code>x:Below</code></dt>
-<dd><p>The window is placed just below the sibling.
-</p></dd>
-<dt> <code>x:Top-If</code></dt>
-<dd><p>If the sibling occludes the window, the window is placed at the top of
-the stack.
-</p></dd>
-<dt> <code>x:Bottom-If</code></dt>
-<dd><p>If the window occludes the sibling, the window is placed at the bottom
-of the stack.
-</p></dd>
-<dt> <code>x:Opposite</code></dt>
-<dd><p>If the sibling occludes the window, the window is placed at the top of
-the stack. If the window occludes the sibling, the window is placed at
-the bottom of the stack.
-</p></dd>
-</dl>
-
-
-<p>If a stack-mode is specified but no sibling is specified, the window
-is restacked as follows:
-</p>
-<dl compact="compact">
-<dt> <code>x:Above</code></dt>
-<dd><p>The window is placed at the top of the stack.
-</p></dd>
-<dt> <code>x:Below</code></dt>
-<dd><p>The window is placed at the bottom of the stack.
-</p></dd>
-<dt> <code>x:Top-If</code></dt>
-<dd><p>If any sibling occludes the window, the window is placed at the top of
-the stack.
-</p></dd>
-<dt> <code>x:Bottom-If</code></dt>
-<dd><p>If the window occludes any sibling, the window is placed at the bottom
-of the stack.
-</p></dd>
-<dt> <code>x:Opposite</code></dt>
-<dd><p>If any sibling occludes the window, the window is placed at the top of
-the stack. If the window occludes any sibling, the window is placed at
-the bottom of the stack.
-</p></dd>
-</dl>
-
-
-
-
-</dd></dl>
-<hr size="6">
-<a name="Window-Attributes"></a>
-<a name="SEC5"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC4" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC6" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC7" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h2 class="section"> 3.2 Window Attributes </h2>
-
-<dl>
-<dt><u>Function:</u> <b>x:window-set!</b><i> window field-name value &hellip;</i>
-<a name="IDX74"></a>
-</dt>
-<dd><p>Changes the components specified by <var>field-name</var>s for the specified
-<var>window</var>. The restrictions are the same as for
-<code>x:create-window</code>. The order in which components are verified and
-altered is server dependent. If an error occurs, a subset of the
-components may have been altered.
-</p></dd></dl>
-
-
-<p>The <code>x:create-window</code> and <code>x:window-set!</code> procedures take five
-and one argument (respectively) followed by pairs of arguments, where
-the first is one of the property-name symbols (or its top-level value)
-listed below; and the second is the value to associate with that
-property.
-</p>
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Back-Pixmap</b>
-<a name="IDX75"></a>
-</dt>
-<dd><p>Sets the background pixmap of the <var>window</var> to the specified pixmap.
-The background pixmap can immediately be freed if no further explicit
-references to it are to be made. If x:Parent-Relative is specified, the
-background pixmap of the window's parent is used, or on the root window,
-the default background is restored. It is an error to perform this
-operation on an x:Input-Only window. If the background is set to #f or
-None, the window has no defined background.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Back-Pixel</b>
-<a name="IDX76"></a>
-</dt>
-<dd><p>Sets the background of the <var>window</var> to the specified pixel value.
-Changing the background does not cause the <var>window</var> contents to be
-changed. It is an error to perform this operation on an x:Input-Only
-window.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Border-Pixmap</b>
-<a name="IDX77"></a>
-</dt>
-<dd><p>Sets the border pixmap of the <var>window</var> to the pixmap you specify.
-The border pixmap can be freed if no further explicit references to it
-are to be made. If you specify x:Copy-From-Parent, a copy of the parent
-window's border pixmap is used. It is an error to perform this
-operation on an x:Input-Only <var>window</var>.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Border-Pixel</b>
-<a name="IDX78"></a>
-</dt>
-<dd><p>Sets the border of the <var>window</var> to the pixel <var>value</var>. It is an
-error to perform this operation on an x:Input-Only window.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Bit-Gravity</b>
-<a name="IDX79"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:CW-Win-Gravity</b>
-<a name="IDX80"></a>
-</dt>
-<dd><p>The bit gravity of a window defines which region of the window should be
-retained when an x:Input-Output window is resized. The default value
-for the bit-gravity attribute is x:Forget-Gravity. The window gravity
-of a window allows you to define how the x:Input-Output or x:Input-Only
-window should be repositioned if its parent is resized. The default
-value for the win-gravity attribute is x:North-West-Gravity.
-</p>
-<p>If the inside width or height of a window is not changed and if the
-window is moved or its border is changed, then the contents of the
-window are not lost but move with the window. Changing the inside width
-or height of the window causes its contents to be moved or lost
-(depending on the bit-gravity of the window) and causes children to be
-reconfigured (depending on their win-gravity). For a change of width
-and height, the (x, y) pairs are defined:
-</p>
-<table>
-<tr><td><p> Gravity Direction
-</p></td><td><p> Coordinates
-</p></td></tr>
-<tr><td><p> x:North-West-Gravity
-</p></td><td><p> (0, 0)
-</p></td></tr>
-<tr><td><p> x:North-Gravity
-</p></td><td><p> (Width/2, 0)
-</p></td></tr>
-<tr><td><p> x:North-East-Gravity
-</p></td><td><p> (Width, 0)
-</p></td></tr>
-<tr><td><p> x:West-Gravity
-</p></td><td><p> (0, Height/2)
-</p></td></tr>
-<tr><td><p> x:Center-Gravity
-</p></td><td><p> (Width/2, Height/2)
-</p></td></tr>
-<tr><td><p> x:East-Gravity
-</p></td><td><p> (Width, Height/2)
-</p></td></tr>
-<tr><td><p> x:South-West-Gravity
-</p></td><td><p> (0, Height)
-</p></td></tr>
-<tr><td><p> x:South-Gravity
-</p></td><td><p> (Width/2, Height)
-</p></td></tr>
-<tr><td><p> x:South-East-Gravity
-</p></td><td><p> (Width, Height)
-</p></td></tr>
-</table>
-
-<p>When a window with one of these bit-gravity values is resized, the
-corresponding pair defines the change in position of each pixel in the
-window. When a window with one of these win-gravities has its parent
-window resized, the corresponding pair defines the change in position of
-the window within the parent. When a window is so repositioned, a
-x:Gravity-Notify event is generated (see section 10.10.5).
-</p>
-<p>A bit-gravity of x:Static-Gravity indicates that the contents or origin
-should not move relative to the origin of the root window. If the
-change in size of the window is coupled with a change in position (x,
-y), then for bit-gravity the change in position of each pixel is (-x,
--y), and for win-gravity the change in position of a child when its
-parent is so resized is (-x, -y). Note that x:Static-Gravity still only
-takes effect when the width or height of the window is changed, not when
-the window is moved.
-</p>
-<p>A bit-gravity of x:Forget-Gravity indicates that the window's contents
-are always discarded after a size change, even if a backing store or
-save under has been requested. The window is tiled with its background
-and zero or more x:Expose events are generated. If no background is
-defined, the existing screen contents are not altered. Some X servers
-may also ignore the specified bit-gravity and always generate x:Expose
-events.
-</p>
-<p>The contents and borders of inferiors are not affected by their parent's
-bit-gravity. A server is permitted to ignore the specified bit-gravity
-and use x:Forget-Gravity instead.
-</p>
-<p>A win-gravity of x:Unmap-Gravity is like x:North-West-Gravity (the
-window is not moved), except the child is also unmapped when the parent
-is resized, and an x:Unmap-Notify event is generated.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Backing-Store</b>
-<a name="IDX81"></a>
-</dt>
-<dd><p>Some implementations of the X server may choose to maintain the contents
-of x:Input-Output windows. If the X server maintains the contents of a
-window, the off-screen saved pixels are known as backing store. The
-backing store advises the X server on what to do with the contents of a
-window. The backing-store attribute can be set to x:Not-Useful
-(default), x:When-Mapped, or x:Always. A backing-store attribute of
-x:Not-Useful advises the X server that maintaining contents is
-unnecessary, although some X implementations may still choose to
-maintain contents and, therefore, not generate x:Expose events. A
-backing-store attribute of x:When-Mapped advises the X server that
-maintaining contents of obscured regions when the window is mapped would
-be beneficial. In this case, the server may generate an x:Expose event
-when the window is created. A backing-store attribute of x:Always
-advises the X server that maintaining contents even when the window is
-unmapped would be beneficial. Even if the window is larger than its
-parent, this is a request to the X server to maintain complete contents,
-not just the region within the parent window boundaries. While the X
-server maintains the window's contents, x:Expose events normally are not
-generated, but the X server may stop maintaining contents at any time.
-</p>
-<p>When the contents of obscured regions of a window are being maintained,
-regions obscured by noninferior windows are included in the destination
-of graphics requests (and source, when the window is the source).
-However, regions obscured by inferior windows are not included.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Backing-Planes</b>
-<a name="IDX82"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:CW-Backing-Pixel</b>
-<a name="IDX83"></a>
-</dt>
-<dd><p>You can set backing planes to indicate (with bits set to 1) which bit
-planes of an x:Input-Output window hold dynamic data that must be
-preserved in backing store and during save unders. The default value
-for the backing-planes attribute is all bits set to 1. You can set
-backing pixel to specify what bits to use in planes not covered by
-backing planes. The default value for the backing-pixel attribute is
-all bits set to 0. The X server is free to save only the specified bit
-planes in the backing store or the save under and is free to regenerate
-the remaining planes with the specified pixel value. Any extraneous
-bits in these values (that is, those bits beyond the specified depth of
-the window) may be simply ignored. If you request backing store or save
-unders, you should use these members to minimize the amount of
-off-screen memory required to store your window.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Override-Redirect</b>
-<a name="IDX84"></a>
-</dt>
-<dd><p>To control window placement or to add decoration, a window manager often
-needs to intercept (redirect) any map or configure request. Pop-up
-windows, however, often need to be mapped without a window manager
-getting in the way. To control whether an x:Input-Output or
-x:Input-Only window is to ignore these structure control facilities, use
-the override-redirect flag.
-</p>
-<p>The override-redirect flag specifies whether map and configure requests
-on this window should override a x:Substructure-Redirect-Mask on the
-parent. You can set the override-redirect flag to #t or #f (default).
-Window managers use this information to avoid tampering with pop-up
-windows.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Save-Under</b>
-<a name="IDX85"></a>
-</dt>
-<dd><p>Some server implementations may preserve contents of x:Input-Output windows
-under other x:Input-Output windows. This is not the same as preserving the
-contents of a window for you. You may get better visual appeal if
-transient windows (for example, pop-up menus) request that the system
-preserve the screen contents under them, so the temporarily obscured
-applications do not have to repaint.
-</p>
-<p>You can set the save-under flag to True or False (default). If
-save-under is True, the X server is advised that, when this window is
-mapped, saving the contents of windows it obscures would be beneficial.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Event-Mask</b>
-<a name="IDX86"></a>
-</dt>
-<dd><p>The event mask defines which events the client is interested in for this
-x:Input-Output or x:Input-Only window (or, for some event types,
-inferiors of this window). The event mask is the bitwise inclusive OR
-of zero or more of the valid event mask bits. You can specify that no
-maskable events are reported by setting x:No-Event-Mask (default).
-</p>
-<p>The following table lists the event mask constants you can pass to the
-event-mask argument and the circumstances in which you would want to
-specify the event mask:
-</p>
-<table>
-<tr><td><p> Event Mask
-</p></td><td><p> Circumstances
-</p></td></tr>
-<tr><td><p> x:No-Event-Mask
-</p></td><td><p> No events wanted
-</p></td></tr>
-<tr><td><p> x:Key-Press-Mask
-</p></td><td><p> Keyboard down events wanted
-</p></td></tr>
-<tr><td><p> x:Key-Release-Mask
-</p></td><td><p> Keyboard up events wanted
-</p></td></tr>
-<tr><td><p> x:Button-Press-Mask
-</p></td><td><p> Pointer button down events wanted
-</p></td></tr>
-<tr><td><p> x:Button-Release-Mask
-</p></td><td><p> Pointer button up events wanted
-</p></td></tr>
-<tr><td><p> x:Enter-Window-Mask
-</p></td><td><p> Pointer window entry events wanted
-</p></td></tr>
-<tr><td><p> x:Leave-Window-Mask
-</p></td><td><p> Pointer window leave events wanted
-</p></td></tr>
-<tr><td><p> x:Pointer-Motion-Mask
-</p></td><td><p> Pointer motion events wanted
-</p></td></tr>
-<tr><td><p> x:Pointer-Motion-Hint-Mask
-</p></td><td>
-<p>If x:Pointer-Motion-Hint-Mask is selected in combination with one or
-more motion-masks, the X server is free to send only one x:Motion-Notify
-event (with the is_hint member of the X:Pointer-Moved-Event structure
-set to x:Notify-Hint) to the client for the event window, until either
-the key or button state changes, the pointer leaves the event window, or
-the client calls X:Query-Pointer or X:Get-Motion-Events. The server
-still may send x:Motion-Notify events without is_hint set to
-x:Notify-Hint.
-</p></td></tr>
-<tr><td><p> x:Button1-Motion-Mask
-</p></td><td><p> Pointer motion while button 1 down
-</p></td></tr>
-<tr><td><p> x:Button2-Motion-Mask
-</p></td><td><p> Pointer motion while button 2 down
-</p></td></tr>
-<tr><td><p> x:Button3-Motion-Mask
-</p></td><td><p> Pointer motion while button 3 down
-</p></td></tr>
-<tr><td><p> x:Button4-Motion-Mask
-</p></td><td><p> Pointer motion while button 4 down
-</p></td></tr>
-<tr><td><p> x:Button5-Motion-Mask
-</p></td><td><p> Pointer motion while button 5 down
-</p></td></tr>
-<tr><td><p> x:Button-Motion-Mask
-</p></td><td><p> Pointer motion while any button down
-</p></td></tr>
-<tr><td><p> x:Keymap-State-Mask
-</p></td><td><p> Keyboard state wanted at window entry and focus in
-</p></td></tr>
-<tr><td><p> x:Exposure-Mask
-</p></td><td><p> Any exposure wanted
-</p></td></tr>
-<tr><td><p> x:Visibility-Change-Mask
-</p></td><td><p> Any change in visibility wanted
-</p></td></tr>
-<tr><td><p> x:Structure-Notify-Mask
-</p></td><td><p> Any change in window structure wanted
-</p></td></tr>
-<tr><td><p> x:Resize-Redirect-Mask
-</p></td><td><p> Redirect resize of this window
-</p></td></tr>
-<tr><td><p> x:Substructure-Notify-Mask
-</p></td><td><p> Substructure notification wanted
-</p></td></tr>
-<tr><td><p> x:Substructure-Redirect-Mask
-</p></td><td><p> Redirect structure requests on children
-</p></td></tr>
-<tr><td><p> x:Focus-Change-Mask
-</p></td><td><p> Any change in input focus wanted
-</p></td></tr>
-<tr><td><p> x:Property-Change-Mask
-</p></td><td><p> Any change in property wanted
-</p></td></tr>
-<tr><td><p> x:Colormap-Change-Mask
-</p></td><td><p> Any change in colormap wanted
-</p></td></tr>
-<tr><td><p> x:Owner-Grab-Button-Mask
-</p></td><td><p> Automatic grabs should activate with owner_events set to True
-</p></td></tr>
-</table>
-
-</dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Dont-Propagate</b>
-<a name="IDX87"></a>
-</dt>
-<dd><p>The do-not-propagate-mask attribute defines which events should not be
-propagated to ancestor windows when no client has the event type
-selected in this x:Input-Output or x:Input-Only window. The
-do-not-propagate-mask is the bitwise inclusive OR of zero or more of the
-following masks: x:Key-Press, x:Key-Release, x:Button-Press,
-x:Button-Release, x:Pointer-Motion, x:Button1Motion, x:Button2Motion,
-x:Button3Motion, x:Button4Motion, x:Button5Motion, and x:Button-Motion.
-You can specify that all events are propagated by setting
-x:No-Event-Mask (default).
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Colormap</b>
-<a name="IDX88"></a>
-</dt>
-<dd><p>The colormap attribute specifies which colormap best reflects the true
-colors of the x:Input-Output window. The colormap must have the same
-visual type as the window. X servers capable of supporting multiple
-hardware colormaps can use this information, and window managers can use
-it for calls to X:Install-Colormap. You can set the colormap attribute
-to a colormap or to x:Copy-From-Parent (default).
-</p>
-<p>If you set the colormap to x:Copy-From-Parent, the parent window's
-colormap is copied and used by its child. However, the child window
-must have the same visual type as the parent. The parent window must
-not have a colormap of x:None. The colormap is copied by sharing the
-colormap object between the child and parent, not by making a complete
-copy of the colormap contents. Subsequent changes to the parent
-window's colormap attribute do not affect the child window.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:CW-Cursor</b>
-<a name="IDX89"></a>
-</dt>
-<dd><p>The cursor attribute specifies which cursor is to be used when the
-pointer is in the x:Input-Output or x:Input-Only window. You can set
-the cursor to a cursor or x:None (default).
-</p>
-<p>If you set the cursor to x:None, the parent's cursor is used when the
-pointer is in the x:Input-Output or x:Input-Only window, and any change
-in the parent's cursor will cause an immediate change in the displayed
-cursor. On the root window, the default cursor is restored.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:window-ref</b><i> window field-name &hellip;</i>
-<a name="IDX90"></a>
-</dt>
-<dd><p>Returns a list of the components specified by <var>field-name</var>s for the
-specified <var>window</var>. Allowable <var>field-name</var>s are a subset of
-those for <code>x:window-set!</code>:
-</p>
-<ul>
-<li> x:CW-Back-Pixel
-</li><li> x:CW-Bit-Gravity
-</li><li> x:CW-Win-Gravity
-</li><li> x:CW-Backing-Store
-</li><li> x:CW-Backing-Planes
-</li><li> x:CW-Backing-Pixel
-</li><li> x:CW-Override-Redirect
-</li><li> x:CW-Save-Under
-</li><li> x:CW-Event-Mask
-</li><li> x:CW-Dont-Propagate
-</li><li> x:CW-Colormap
-</li></ul>
-</dd></dl>
-
-
-<hr size="6">
-<a name="Window-Properties-and-Visibility"></a>
-<a name="SEC6"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC5" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC7" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC7" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h2 class="section"> 3.3 Window Properties and Visibility </h2>
-
-<dl>
-<dt><u>Function:</u> <b>x:get-window-property</b><i> window property </i>
-<a name="IDX91"></a>
-</dt>
-<dd><p>Returns the (string or list of numbers) value of <var>property</var> of
-<var>window</var>.
-</p><dl>
-<dt><u>Function:</u> <b>x:get-window-property</b><i> window property #t</i>
-<a name="IDX92"></a>
-</dt>
-<dd><p>Removes and returns the (string or list of numbers) value of
-<var>property</var> of <var>window</var>.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:list-properties</b><i> window</i>
-<a name="IDX93"></a>
-</dt>
-<dd><p>Returns a list of the properties (strings) defined for <var>window</var>.
-</p></dd></dl>
-
-
-<p>In X parlance, a window which is hidden even when not obscured by other
-windows is <em>unmapped</em>; one which
-<a name="IDX94"></a>
-<a name="IDX95"></a>
-<a name="IDX96"></a>
-<a name="IDX97"></a>
-shows is <em>mapped</em>. It is an unfortunate name-collision with Scheme,
-and is ingrained in the attribute names.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:map-window</b><i> window</i>
-<a name="IDX98"></a>
-</dt>
-<dd><p>Maps the <var>window</var> and all of its subwindows that have had map
-requests. Mapping a window that has an unmapped ancestor does not
-display the window but marks it as eligible for display when the
-ancestor becomes mapped. Such a window is called unviewable. When all
-its ancestors are mapped, the window becomes viewable and will be
-visible on the screen if it is not obscured by another window. This
-function has no effect if the <var>window</var> is already mapped.
-</p>
-<p>If the override-redirect of the window is False and if some other client
-has selected x:Substructure-Redirect-Mask on the parent window, then the X
-server generates a MapRequest event, and the <code>x:map-window</code>
-function does not map the <var>window</var>. Otherwise, the <var>window</var> is
-mapped, and the X server generates a MapNotify event.
-</p>
-<p>If the <var>window</var> becomes viewable and no earlier contents for it are
-remembered, the X server tiles the <var>window</var> with its background. If
-the window's background is undefined, the existing screen contents are
-not altered, and the X server generates zero or more x:Expose events. If
-backing-store was maintained while the <var>window</var> was unmapped, no
-x:Expose events are generated. If backing-store will now be maintained, a
-full-window exposure is always generated. Otherwise, only visible
-regions may be reported. Similar tiling and exposure take place for any
-newly viewable inferiors.
-</p>
-<p>If the window is an Input-Output window, <code>x:map-window</code> generates
-x:Expose events on each Input-Output window that it causes to be displayed.
-If the client maps and paints the window and if the client begins
-processing events, the window is painted twice. To avoid this, first
-ask for x:Expose events and then map the window, so the client processes
-input events as usual. The event list will include x:Expose for each
-window that has appeared on the screen. The client's normal response to
-an x:Expose event should be to repaint the window. This method usually
-leads to simpler programs and to proper interaction with window
-managers.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:map-subwindows</b><i> window</i>
-<a name="IDX99"></a>
-</dt>
-<dd><p>Maps all subwindows of a specified <var>window</var> in top-to-bottom
-stacking order. The X server generates x:Expose events on each newly
-displayed window. This may be much more efficient than mapping many
-windows one at a time because the server needs to perform much of the
-work only once, for all of the windows, rather than for each window.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:unmap-window</b><i> window</i>
-<a name="IDX100"></a>
-</dt>
-<dd><p>Unmaps the specified <var>window</var> and causes the X server to generate an
-UnmapNotify event. If the specified <var>window</var> is already unmapped,
-<code>x:unmap-window</code> has no effect. Normal exposure processing on
-formerly obscured windows is performed. Any child window will no longer
-be visible until another map call is made on the parent. In other
-words, the subwindows are still mapped but are not visible until the
-parent is mapped. Unmapping a <var>window</var> will generate x:Expose events
-on windows that were formerly obscured by it.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:unmap-subwindows</b><i> window</i>
-<a name="IDX101"></a>
-</dt>
-<dd><p>Unmaps all subwindows for the specified <var>window</var> in bottom-to-top
-stacking order. It causes the X server to generate an UnmapNotify event
-on each subwindow and x:Expose events on formerly obscured windows. Using
-this function is much more efficient than unmapping multiple windows one
-at a time because the server needs to perform much of the work only
-once, for all of the windows, rather than for each window.
-</p></dd></dl>
-
-</dd></dl>
-<hr size="6">
-<a name="Graphics-Context"></a>
-<a name="SEC7"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC6" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC9" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC3" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC9" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 4. Graphics Context </h1>
-
-
-<p>Most attributes of graphics operations are stored in <em>GC</em>s. These
-include line width, line style, plane mask, foreground, background,
-tile, stipple, clipping region, end style, join style, and so on.
-Graphics operations (for example, drawing lines) use these values to
-determine the actual drawing operation.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-gc</b><i> drawable field-name value &hellip;</i>
-<a name="IDX102"></a>
-</dt>
-<dd><p>Creates and returns graphics context. The graphics context can be used
-with any destination drawable having the same root and depth as the
-specified <var>drawable</var>.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:gc-set!</b><i> graphics-context field-name value &hellip;</i>
-<a name="IDX103"></a>
-</dt>
-<dd><p>Changes the components specified by <var>field-name</var>s for the specified
-<var>graphics-context</var>. The restrictions are the same as for
-<code>x:create-gc</code>. The order in which components are verified and
-altered is server dependent. If an error occurs, a subset of the
-components may have been altered.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:copy-gc-fields!</b><i> gcontext-src gcontext-dst field-name &hellip;</i>
-<a name="IDX104"></a>
-</dt>
-<dd><p>Copies the components specified by <var>field-name</var>s from
-<var>gcontext-src</var> to <var>gcontext-dst</var>. <var>Gcontext-src</var> and
-<var>gcontext-dst</var> must have the same root and depth.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:gc-ref</b><i> graphics-context field-name &hellip;</i>
-<a name="IDX105"></a>
-</dt>
-<dd><p>Returns a list of the components specified by <var>field-name</var>s &hellip;
-from the specified <var>graphics-context</var>.
-</p></dd></dl>
-
-<a name="SEC8"></a>
-<h2 class="heading"> GC Attributes </h2>
-
-
-<p>Both <code>x:create-gc</code> and <code>x:change-gc</code> take one argument
-followed by pairs of arguments, where the first is one of the
-property-name symbols (or its top-level value) listed below; and the
-second is the value to associate with that property.
-</p>
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Function</b>
-<a name="IDX106"></a>
-</dt>
-<dd><p>The function attributes of a GC are used when you update a section of a
-drawable (the destination) with bits from somewhere else (the source).
-The function in a GC defines how the new destination bits are to be
-computed from the source bits and the old destination bits. x:G-Xcopy is
-typically the most useful because it will work on a color display, but
-special applications may use other functions, particularly in concert
-with particular planes of a color display. The 16 functions are:
-</p>
-<table><tr><td>&nbsp;</td><td><pre class="format"><tt>
-x:G-Xclear 0
-x:G-Xand (AND src dst)
-x:G-Xand-Reverse (AND src (NOT dst))
-x:G-Xcopy src
-x:G-Xand-Inverted (AND (NOT src) dst)
-x:G-Xnoop dst
-x:G-Xxor (XOR src dst)
-x:G-Xor (OR src dst)
-x:G-Xnor (AND (NOT src) (NOT dst))
-x:G-Xequiv (XOR (NOT src) dst)
-x:G-Xinvert (NOT dst)
-x:G-Xor-Reverse (OR src (NOT dst))
-x:G-Xcopy-Inverted (NOT src)
-x:G-Xor-Inverted (OR (NOT src) dst)
-x:G-Xnand (OR (NOT src) (NOT dst))
-x:G-Xset 1</tt>
-</pre></td></tr></table></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Plane-Mask</b>
-<a name="IDX107"></a>
-</dt>
-<dd><p>Many graphics operations depend on either pixel values or planes in a
-GC. The planes attribute is an integer which specifies which planes of
-the destination are to be modified, one bit per plane. A monochrome
-display has only one plane and will be the least significant bit of the
-integer. As planes are added to the display hardware, they will occupy
-more significant bits in the plane mask.
-</p>
-<p>In graphics operations, given a source and destination pixel, the result
-is computed bitwise on corresponding bits of the pixels. That is, a
-Boolean operation is performed in each bit plane. The plane-mask
-restricts the operation to a subset of planes. <code>x:All-Planes</code> can be
-used to refer to all planes of the screen simultaneously. The result is
-computed by the following:
-</p>
-<table><tr><td>&nbsp;</td><td><pre class="format">(OR (AND (FUNC src dst) plane-mask) (AND dst (NOT plane-mask)))
-</pre></td></tr></table>
-<p>Range checking is not performed on a plane-mask value. It is simply
-truncated to the appropriate number of bits.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Foreground</b>
-<a name="IDX108"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:GC-Background</b>
-<a name="IDX109"></a>
-</dt>
-<dd><p>Range checking is not performed on the values for foreground or
-background. They are simply truncated to the appropriate number of
-bits.
-</p>
-<p>Note that foreground and background are not initialized to any values
-likely to be useful in a window.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Line-Width</b>
-<a name="IDX110"></a>
-</dt>
-<dd><p>The line-width is measured in pixels and either can be greater than or
-equal to one (wide line) or can be the special value zero (thin line).
-</p>
-<p>Thin lines (zero line-width) are one-pixel-wide lines drawn using an
-unspecified, device-dependent algorithm. There are only two constraints
-on this algorithm.
-</p>
-<ul>
-<li>
-If a line is drawn unclipped from [x1,y1] to [x2,y2] and if another line
-is drawn unclipped from [x1+dx,y1+dy] to [x2+dx,y2+dy], a point [x,y] is
-touched by drawing the first line if and only if the point [x+dx,y+dy]
-is touched by drawing the second line.
-
-</li><li>
-The effective set of points comprising a line cannot be affected by
-clipping. That is, a point is touched in a clipped line if and only if
-the point lies inside the clipping region and the point would be touched
-by the line when drawn unclipped.
-</li></ul>
-
-<p>A wide line drawn from [x1,y1] to [x2,y2] always draws the same pixels
-as a wide line drawn from [x2,y2] to [x1,y1], not counting cap-style and
-join-style. It is recommended that this property be true for thin
-lines, but this is not required. A line-width of zero may differ from a
-line-width of one in which pixels are drawn. This permits the use of
-many manufacturers' line drawing hardware, which may run many times
-faster than the more precisely specified wide lines.
-</p>
-<p>In general, drawing a thin line will be faster than drawing a wide line
-of width one. However, because of their different drawing algorithms,
-thin lines may not mix well aesthetically with wide lines. If it is
-desirable to obtain precise and uniform results across all displays, a
-client should always use a line-width of one rather than a linewidth of
-zero.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Line-Style</b>
-<a name="IDX111"></a>
-</dt>
-<dd><p>The line-style defines which sections of a line are drawn:
-</p>
-<dl compact="compact">
-<dt> <tt>x:Line-Solid</tt></dt>
-<dd><p>The full path of the line is drawn.
-</p></dd>
-<dt> <tt>x:Line-Double-Dash</tt></dt>
-<dd><p>The full path of the line is drawn, but the even dashes are filled
-differently from the odd dashes (see fill-style) with x:Cap-Butt style used
-where even and odd dashes meet.
-</p></dd>
-<dt> <tt>x:Line-On-Off-Dash</tt></dt>
-<dd><p>Only the even dashes are drawn, and cap-style applies to all internal
-ends of the individual dashes, except x:Cap-Not-Last is treated as x:Cap-Butt.
-</p></dd>
-</dl>
-</dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Cap-Style</b>
-<a name="IDX112"></a>
-</dt>
-<dd><p>The cap-style defines how the endpoints of a path are drawn:
-</p>
-<dl compact="compact">
-<dt> <tt>x:Cap-Not-Last</tt></dt>
-<dd><p>This is equivalent to x:Cap-Butt except that for a line-width of zero the
-final endpoint is not drawn.
-</p></dd>
-<dt> <tt>x:Cap-Butt</tt></dt>
-<dd><p>The line is square at the endpoint (perpendicular to the slope of the
-line) with no projection beyond.
-</p></dd>
-<dt> <tt>x:Cap-Round</tt></dt>
-<dd><p>The line has a circular arc with the diameter equal to the line-width,
-centered on the endpoint. (This is equivalent to x:Cap-Butt for line-width
-of zero).
-</p></dd>
-<dt> <tt>x:Cap-Projecting</tt></dt>
-<dd><p>The line is square at the end, but the path continues beyond the
-endpoint for a distance equal to half the line-width. (This is
-equivalent to x:Cap-Butt for line-width of zero).
-</p></dd>
-</dl>
-</dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Join-Style</b>
-<a name="IDX113"></a>
-</dt>
-<dd><p>The join-style defines how corners are drawn for wide lines:
-</p>
-<dl compact="compact">
-<dt> <tt>x:Join-Miter</tt></dt>
-<dd><p>The outer edges of two lines extend to meet at an angle. However, if
-the angle is less than 11 degrees, then a x:Join-Bevel join-style is used
-instead.
-</p></dd>
-<dt> <tt>x:Join-Round</tt></dt>
-<dd><p>The corner is a circular arc with the diameter equal to the
-line-width, centered on the x:Join-point.
-</p></dd>
-<dt> <tt>x:Join-Bevel</tt></dt>
-<dd><p>The corner has x:Cap-Butt endpoint styles with the triangular notch filled.
-</p></dd>
-</dl>
-</dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Fill-Style</b>
-<a name="IDX114"></a>
-</dt>
-<dd><p>The fill-style defines the contents of the source for line, text, and
-fill requests. For all text and fill requests (for example,
-X:Draw-Text, X:Fill-Rectangle, X:Fill-Polygon, and X:Fill-Arc); for line
-requests with linestyle x:Line-Solid (for example, X:Draw-Line,
-X:Draw-Segments, X:Draw-Rectangle, X:Draw-Arc); and for the even dashes
-for line requests with line-style x:Line-On-Off-Dash or
-x:Line-Double-Dash, the following apply:
-</p>
-<dl compact="compact">
-<dt> <tt>x:Fill-Solid</tt></dt>
-<dd><p>Foreground
-</p></dd>
-<dt> <tt>x:Fill-Tiled</tt></dt>
-<dd><p>Tile
-</p></dd>
-<dt> <tt>x:Fill-Opaque-Stippled</tt></dt>
-<dd><p>A tile with the same width and height as stipple, but with background
-everywhere stipple has a zero and with foreground everywhere stipple has
-a one
-</p></dd>
-<dt> <tt>x:Fill-Stippled</tt></dt>
-<dd><p>Foreground masked by stipple
-</p></dd>
-</dl>
-
-<p>When drawing lines with line-style x:Line-Double-Dash, the odd dashes
-are controlled by the fill-style in the following manner:
-</p>
-<dl compact="compact">
-<dt> <tt>x:Fill-Solid</tt></dt>
-<dd><p>Background
-</p></dd>
-<dt> <tt>x:Fill-Tiled</tt></dt>
-<dd><p>Same as for even dashes
-</p></dd>
-<dt> <tt>x:Fill-Opaque-Stippled</tt></dt>
-<dd><p>Same as for even dashes
-</p></dd>
-<dt> <tt>x:Fill-Stippled</tt></dt>
-<dd><p>Background masked by stipple
-</p></dd>
-</dl>
-</dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Fill-Rule</b>
-<a name="IDX115"></a>
-</dt>
-<dd><p>The fill-rule defines what pixels are inside (drawn) for paths given in
-X:Fill-Polygon requests and can be set to x:Even-Odd-Rule or
-x:Winding-Rule.
-</p>
-<dl compact="compact">
-<dt> <tt>x:Even-Odd-Rule</tt></dt>
-<dd><p>A point is inside if an infinite ray with the point as
-origin crosses the path an odd number of times.
-</p></dd>
-<dt> <tt>x:Winding-Rule</tt></dt>
-<dd><p>A point is inside if an infinite ray with the point as origin crosses an
-unequal number of clockwise and counterclockwise directed path segments.
-</p></dd>
-</dl>
-
-<p>A clockwise directed path segment is one that crosses the ray from left
-to right as observed from the point. A counterclockwise segment is one
-that crosses the ray from right to left as observed from the point. The
-case where a directed line segment is coincident with the ray is
-uninteresting because you can simply choose a different ray that is not
-coincident with a segment.
-</p>
-<p>For both x:Even-Odd-Rule and x:Winding-Rule, a point is infinitely
-small, and the path is an infinitely thin line. A pixel is inside if
-the center point of the pixel is inside and the center point is not on
-the boundary. If the center point is on the boundary, the pixel is
-inside if and only if the polygon interior is immediately to its right
-(x increasing direction). Pixels with centers on a horizontal edge are
-a special case and are inside if and only if the polygon interior is
-immediately below (y increasing direction).
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Tile</b>
-<a name="IDX116"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:GC-Stipple</b>
-<a name="IDX117"></a>
-</dt>
-<dd><p>The tile/stipple represents an infinite two-dimensional plane, with the
-tile/stipple replicated in all dimensions.
-</p>
-<p>The tile pixmap must have the same root and depth as the GC, or an error
-results. The stipple pixmap must have depth one and must have the same
-root as the GC, or an error results. For stipple operations where the
-fill-style is x:Fill-Stippled but not x:Fill-Opaque-Stippled, the
-stipple pattern is tiled in a single plane and acts as an additional
-clip mask to be ANDed with the clip-mask. Although some sizes may be
-faster to use than others, any size pixmap can be used for tiling or
-stippling.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Tile-Stip-X-Origin</b>
-<a name="IDX118"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:GC-Tile-Stip-Y-Origin</b>
-<a name="IDX119"></a>
-</dt>
-<dd><p>When the tile/stipple plane is superimposed on a drawable for use in a
-graphics operation, the upper-left corner of some instance of the
-tile/stipple is at the coordinates within the drawable specified by the
-tile/stipple origin. The tile/stipple origin is interpreted relative to
-the origin of whatever destination drawable is specified in a graphics
-request.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Font</b>
-<a name="IDX120"></a>
-</dt>
-<dd><p>The font to be used for drawing text.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Subwindow-Mode</b>
-<a name="IDX121"></a>
-</dt>
-<dd><p>You can set the subwindow-mode to x:Clip-By-Children or
-x:Include-Inferiors.
-</p><dl compact="compact">
-<dt> <tt>x:Clip-By-Children</tt></dt>
-<dd><p>Both source and destination windows are additionally clipped by all
-viewable Input-Output children.
-</p></dd>
-<dt> <tt>x:Include-Inferiors</tt></dt>
-<dd><p>Neither source nor destination window is clipped by inferiors. This
-will result in including subwindow contents in the source and drawing
-through subwindow boundaries of the destination. The use of
-<code>x:Include-Inferiors</code> on a window of one depth with mapped
-inferiors of differing depth is not illegal, but the semantics are
-undefined by the core protocol.
-</p></dd>
-</dl>
-</dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Graphics-Exposures</b>
-<a name="IDX122"></a>
-</dt>
-<dd><p>The graphics-exposure flag controls x:Graphics-Expose event generation
-for X:Copy-Area and X:Copy-Plane requests (and any similar requests
-defined by extensions).
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Clip-X-Origin</b>
-<a name="IDX123"></a>
-</dt>
-<dt><u>Attribute:</u> <b>x:GC-Clip-Y-Origin</b>
-<a name="IDX124"></a>
-</dt>
-<dd><p>The clip-mask origin is interpreted relative to the origin of whatever
-destination drawable is specified in a graphics request.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Clip-Mask</b>
-<a name="IDX125"></a>
-</dt>
-<dd><p>The clip-mask restricts writes to the destination drawable. If the
-clip-mask is set to a pixmap, it must have depth one and have the same
-root as the GC, or an error results. If clip-mask is set to
-<a name="IDX126"></a>
-<a name="IDX127"></a>
-<em>x:None</em>, the pixels are always drawn regardless of the clip origin.
-The clip-mask also can be set by calling <code>X:Set-Region</code>. Only
-pixels where the clip-mask has a bit set to 1 are drawn. Pixels are not
-drawn outside the area covered by the clip-mask or where the clip-mask
-has a bit set to 0. The clip-mask affects all graphics requests. The
-clip-mask does not clip sources. The clip-mask origin is interpreted
-relative to the origin of whatever destination drawable is specified in
-a graphics request.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Dash-Offset</b>
-<a name="IDX128"></a>
-</dt>
-<dd><p>Defines the phase of the pattern, specifying how many pixels into the
-dash-list the pattern should actually begin in any single graphics
-request. Dashing is continuous through path elements combined with a
-join-style but is reset to the dash-offset between each sequence of
-joined lines.
-</p>
-<p>The unit of measure for dashes is the same for the ordinary
-coordinate system. Ideally, a dash length is measured along
-the slope of the line, but implementations are only required
-to match this ideal for horizontal and vertical lines.
-Failing the ideal semantics, it is suggested that the length
-be measured along the major axis of the line. The major
-axis is defined as the x axis for lines drawn at an angle of
-between -45 and +45 degrees or between 135 and 225 degrees
-from the x axis. For all other lines, the major axis is the
-y axis.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Dash-List</b>
-<a name="IDX129"></a>
-</dt>
-<dd><p>There must be at least one element in the specified <var>dash-list</var>.
-The initial and alternating elements (second, fourth, and so on) of the
-<var>dash-list</var> are the even dashes, and the others are the odd dashes.
-Each element specifies a dash length in pixels. All of the elements
-must be nonzero. Specifying an odd-length list is equivalent to
-specifying the same list concatenated with itself to produce an
-even-length list.
-</p></dd></dl>
-
-<dl>
-<dt><u>Attribute:</u> <b>x:GC-Arc-Mode</b>
-<a name="IDX130"></a>
-</dt>
-<dd><p>The arc-mode controls filling in the X:Fill-Arcs function and can be set
-to x:Arc-Pie-Slice or x:Arc-Chord.
-</p><dl compact="compact">
-<dt> <tt>x:Arc-Pie-Slice</tt></dt>
-<dd><p>The arcs are pie-slice filled.
-</p></dd>
-<dt> <tt>x:Arc-Chord</tt></dt>
-<dd><p>The arcs are chord filled.
-</p></dd>
-</dl>
-</dd></dl>
-
-
-<hr size="6">
-<a name="Cursor"></a>
-<a name="SEC9"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC7" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC10" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC7" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC10" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 5. Cursor </h1>
-
-<dl>
-<dt><u>Function:</u> <b>x:create-cursor</b><i> display shape</i>
-<a name="IDX131"></a>
-</dt>
-<dd><p>X provides a set of standard cursor shapes in a special font named
-<a name="IDX132"></a>
-<em>cursor</em>. Applications are encouraged to use this interface for
-their cursors because the font can be customized for the individual
-display type. The <var>shape</var> argument specifies which glyph of the standard
-fonts to use.
-</p>
-<p>The hotspot comes from the information stored in the cursor font. The
-initial colors of a cursor are a black foreground and a white background
-(see X:Recolor-Cursor). The names of all cursor shapes are defined with
-the prefix XC: in <tt>`x11.scm'</tt>.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-cursor</b><i> source-font source-char mask-font mask-char fgc bgc</i>
-<a name="IDX133"></a>
-</dt>
-<dd><p>Creates a cursor from the source and mask bitmaps obtained from the
-specified font glyphs. The integer <var>source-char</var> must be a defined
-glyph in <var>source-font</var>. The integer <var>mask-char</var> must be a
-defined glyph in <var>mask-font</var>. The origins of the <var>source-char</var>
-and <var>mask-char</var> glyphs are positioned coincidently and define the
-hotspot. The <var>source-char</var> and <var>mask-char</var> need not have the
-same bounding box metrics, and there is no restriction on the placement
-of the hotspot relative to the bounding boxes.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-cursor</b><i> source-font source-char #f #f fgc bgc</i>
-<a name="IDX134"></a>
-</dt>
-<dd><p>If <var>mask-font</var> and <var>mask-char</var> are #f, all pixels of the source
-are displayed.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-cursor</b><i> source-pixmap mask-pixmap fgc bgc origin</i>
-<a name="IDX135"></a>
-</dt>
-<dd><p><var>mask-pixmap</var> must be the same size as the pixmap defined by the
-<var>source-pixmap</var> argument. The foreground and background RGB values
-must be specified using <var>foreground-color</var> and
-<var>background-color</var>, even if the X server only has a x:Static-Gray or
-x:Gray-Scale screen. The hotspot must be a point within the
-<var>source-pixmap</var>.
-</p>
-<p><code>X:Create-Cursor</code> creates and returns a cursor. The
-<var>foreground-color</var> is used for the pixels set to 1 in the source,
-and the <var>background-color</var> is used for the pixels set to 0. Both
-source and mask must have depth one but can have any root. The
-<var>mask-pixmap</var> defines the shape of the cursor. The pixels set to 1
-in <var>mask-pixmap</var> define which source pixels are displayed, and the
-pixels set to 0 define which pixels are ignored.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-cursor</b><i> source-pixmap #f fgc bgc origin</i>
-<a name="IDX136"></a>
-</dt>
-<dd><p>If <var>mask-pixmap</var> is #f, all pixels of the source are displayed.
-</p></dd></dl>
-
-</dd></dl>
-</dd></dl>
-</dd></dl>
-</dd></dl>
-<hr size="6">
-<a name="Colormap"></a>
-<a name="SEC10"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC9" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC11" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC9" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC11" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 6. Colormap </h1>
-
-<p>A <em>colormap</em> maps pixel values to <em>RGB</em> color space values.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:create-colormap</b><i> window visual alloc-policy</i>
-<a name="IDX137"></a>
-</dt>
-<dd><p><var>window</var> specifies the window on whose screen you want to create a
-colormap. <var>visual</var> specifies a visual type supported on the screen.
-<var>alloc-policy</var> Specifies the colormap entries to be allocated. You
-can pass <code>X:Alloc-None</code> or <code>X:Alloc-All</code>.
-</p>
-<p>The <code>X:Create-Colormap</code> function creates and returns a colormap of
-the specified <var>visual</var> type for the screen on which <var>window</var>
-resides. Note that <var>window</var> is used only to determine the screen.
-</p>
-<dl compact="compact">
-<dt> <samp>`X:Gray-Scale'</samp></dt>
-<dt> <samp>`X:Pseudo-Color'</samp></dt>
-<dt> <samp>`X:Direct-Color'</samp></dt>
-<dd><p>The initial values of the colormap entries are undefined.
-</p>
-</dd>
-<dt> <samp>`X:Static-Gray'</samp></dt>
-<dt> <samp>`X:Static-Color'</samp></dt>
-<dt> <samp>`X:True-Color'</samp></dt>
-<dd><p>The entries have defined values, but those values are specific to
-<var>visual</var> and are not defined by X. The <var>alloc-policy</var> must be
-<samp>`X:Alloc-None'</samp>.
-</p>
-</dd>
-</dl>
-
-<p>For the other visual classes, if <var>alloc-policy</var> is
-<samp>`X:Alloc-None'</samp>, the colormap initially has no allocated entries,
-and clients can allocate them.
-</p>
-<p>If <var>alloc-policy</var> is <samp>`X:Alloc-All'</samp>, the entire colormap is
-allocated writable. The initial values of all allocated entries are
-undefined.
-</p>
-<dl compact="compact">
-<dt> <samp>`X:Gray-Scale'</samp></dt>
-<dt> <samp>`X:Pseudo-Color'</samp></dt>
-<dd><p>The effect is as if an <code>XAllocColorCells</code> call returned all pixel
-values from zero to N - 1, where N is the colormap entries value in
-<var>visual</var>.
-</p>
-</dd>
-<dt> <samp>`X:Direct-Color'</samp></dt>
-<dd><p>The effect is as if an <code>XAllocColorPlanes</code> call returned a pixel
-value of zero and red_mask, green_mask, and blue_mask values containing
-the same bits as the corresponding masks in the specified visual.
-</p></dd>
-</dl>
-
-</dd></dl>
-
-
-<p>To create a new colormap when the allocation out of a previously
-shared colormap has failed because of resource exhaustion, use:
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:copy-colormap-and-free</b><i> colormap</i>
-<a name="IDX138"></a>
-</dt>
-<dd><p>Creates and returns a colormap of the same visual type and for the same
-screen as the specified <var>colormap</var>. It also moves all of the
-client's existing allocation from the specified <var>colormap</var> to the
-new colormap with their color values intact and their read-only or
-writable characteristics intact and frees those entries in the specified
-colormap. Color values in other entries in the new colormap are
-undefined. If the specified colormap was created by the client with
-alloc set to <samp>`X:Alloc-All'</samp>, the new colormap is also created with
-<samp>`X:Alloc-All'</samp>, all color values for all entries are copied from the
-specified <var>colormap</var>, and then all entries in the specified
-<var>colormap</var> are freed. If the specified <var>colormap</var> was not
-created by the client with <samp>`X:Alloc-All'</samp>, the allocations to be moved
-are all those pixels and planes that have been allocated by the client
-and that have not been freed since they were allocated.
-</p>
-</dd></dl>
-
-<p>A <em>colormap</em> maps pixel values to elements of the <em>RGB</em>
-datatype. An <var>RGB</var> is a list or vector of 3 integers, describing
-the red, green, and blue intensities respectively. The integers are in
-the range 0 - 65535.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:alloc-colormap-cells</b><i> colormap ncolors nplanes</i>
-<a name="IDX139"></a>
-</dt>
-<dt><u>Function:</u> <b>x:alloc-colormap-cells</b><i> colormap ncolors nplanes contiguous?</i>
-<a name="IDX140"></a>
-</dt>
-<dd><p>The <code>X:Alloc-Color-Cells</code> function allocates read/write color
-cells. The number of colors, <var>ncolors</var> must be positive and the
-number of planes, <var>nplanes</var> nonnegative. If <var>ncolors</var> and
-nplanes are requested, then <var>ncolors</var> pixels and nplane plane masks
-are returned. No mask will have any bits set to 1 in common with any
-other mask or with any of the pixels. By ORing together each pixel with
-zero or more masks, <var>ncolors</var> * 2^<var>nplanes</var> distinct pixels can
-be produced. All of these are allocated writable by the request.
-</p>
-<dl compact="compact">
-<dt> <samp>`x:Gray-Scale'</samp></dt>
-<dt> <samp>`x:Pseudo-Color'</samp></dt>
-<dd><p>Each mask has exactly one bit set to 1. If <var>contiguous?</var> is
-non-false and if all masks are ORed together, a single contiguous set of
-bits set to 1 is formed.
-</p></dd>
-<dt> <samp>`x:Direct-Color'</samp></dt>
-<dd><p>Each mask has exactly three bits set to 1. If <var>contiguous?</var> is
-non-false and if all masks are ORed together, three contiguous sets of
-bits set to 1 (one within each pixel subfield) is formed.
-</p></dd>
-</dl>
-
-<p>The RGB values of the allocated entries are undefined.
-<code>X:Alloc-Color-Cells</code> returns a list of two uniform arrays if it
-succeeded or #f if it failed. The first array has the pixels allocated
-and the second has the plane-masks.
-</p>
-
-<dl>
-<dt><u>Function:</u> <b>x:alloc-colormap-cells</b><i> colormap ncolors rgb</i>
-<a name="IDX141"></a>
-</dt>
-<dt><u>Function:</u> <b>x:alloc-colormap-cells</b><i> colormap ncolors rgb contiguous?</i>
-<a name="IDX142"></a>
-</dt>
-<dd><p>The specified <var>ncolors</var> must be positive; and <var>rgb</var> a list or
-vector of 3 nonnegative integers. If <var>ncolors</var> colors, <var>nreds</var>
-reds, <var>ngreens</var> greens, and <var>nblues</var> blues are requested,
-<var>ncolors</var> pixels are returned; and the masks have <var>nreds</var>,
-<var>ngreens</var>, and <var>nblues</var> bits set to 1, respectively. If
-<var>contiguous?</var> is non-false, each mask will have a contiguous set of
-bits set to 1. No mask will have any bits set to 1 in common with any
-other mask or with any of the pixels.
-</p>
-<p>Each mask will lie within the corresponding pixel subfield. By ORing
-together subsets of masks with each pixel value, <var>ncolors</var> *
-2(<var>nreds</var>+<var>ngreens</var>+<var>nblues</var>) distinct pixel values can be
-produced. All of these are allocated by the request. However, in the
-colormap, there are only <var>ncolors</var> * 2^<var>nreds</var> independent red
-entries, <var>ncolors</var> * 2^<var>ngreens</var> independent green entries, and
-<var>ncolors</var> * 2^<var>nblues</var> independent blue entries.
-</p>
-<p><code>X:Alloc-Color-Cells</code> returns a list if it succeeded or #f if it
-failed. The first element of the list has an array of the pixels
-allocated. The second, third, and fourth elements are the red, green,
-and blue plane-masks.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:free-colormap-cells</b><i> colormap pixels planes</i>
-<a name="IDX143"></a>
-</dt>
-<dt><u>Function:</u> <b>x:free-colormap-cells</b><i> colormap pixels</i>
-<a name="IDX144"></a>
-</dt>
-<dd><p>Frees the cells represented by pixels whose values are in the
-<var>pixels</var> unsigned-integer uniform-vector. The <var>planes</var> argument
-should not have any bits set to 1 in common with any of the pixels. The
-set of all pixels is produced by ORing together subsets of the
-<var>planes</var> argument with the pixels. The request frees all of these
-pixels that were allocated by the client. Note that freeing an
-individual pixel obtained from <code>X:Alloc-Colormap-Cells</code> with a
-planes argument may not actually allow it to be reused until all of its
-related pixels are also freed. Similarly, a read-only entry is not
-actually freed until it has been freed by all clients, and if a client
-allocates the same read-only entry multiple times, it must free the
-entry that many times before the entry is actually freed.
-</p>
-<p>All specified pixels that are allocated by the client in the
-<var>colormap</var> are freed, even if one or more pixels produce an error.
-It is an error if a specified pixel is not allocated by the client (that
-is, is unallocated or is only allocated by another client) or if the
-colormap was created with all entries writable (by passing
-<samp>`x:Alloc-All'</samp> to <code>X:Create-Colormap</code>). If more than one pixel
-is in error, the one that gets reported is arbitrary.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:colormap-find-color</b><i> colormap rgb</i>
-<a name="IDX145"></a>
-</dt>
-<dd><p><var>rgb</var> is a list or vector of 3 integers, describing the red, green,
-and blue intensities respectively; or an integer <samp>`#x<i>rrggbb</i>'</samp>,
-packing red, green and blue intensities in the range 0 - 255.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:colormap-find-color</b><i> colormap color-name</i>
-<a name="IDX146"></a>
-</dt>
-<dd><p>The case-insensitive string <var>color_name</var> specifies the name of a
-color (for example, <tt>`red'</tt>)
-</p>
-<p><code>X:Colormap-Find-Color</code> allocates a read-only colormap entry
-corresponding to the closest RGB value supported by the hardware.
-<code>X:Colormap-Find-Color</code> returns the pixel value of the color
-closest to the specified <var>RGB</var> or <var>color_name</var> elements
-supported by the hardware, if successful; otherwise
-<code>X:Colormap-Find-Color</code> returns #f.
-</p>
-<p>Multiple clients that request the same effective RGB value can
-be assigned the same read-only entry, thus allowing entries to be
-shared. When the last client deallocates a shared cell, it is
-deallocated.
-</p>
-</dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:color-ref</b><i> colormap pixel</i>
-<a name="IDX147"></a>
-</dt>
-<dd><p>Returns a list of 3 integers, describing the red, green,
-and blue intensities respectively of the <var>colormap</var> entry of the
-cell indexed by <var>pixel</var>.
-</p>
-<p>The integer <var>pixel</var> must be a valid index into <var>colormap</var>.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>X:Color-Set!</b><i> colormap pixel rgb</i>
-<a name="IDX148"></a>
-</dt>
-<dd><p><var>rgb</var> is a list or vector of 3 integers, describing the red, green,
-and blue intensities respectively; or an integer <samp>`#x<i>rrggbb</i>'</samp>,
-packing red, green and blue intensities in the range 0 - 255.
-</p>
-<dl>
-<dt><u>Function:</u> <b>X:Color-Set!</b><i> colormap pixel color-name</i>
-<a name="IDX149"></a>
-</dt>
-<dd><p>The case-insensitive string <var>color_name</var> specifies the name of a
-color (for example, <tt>`red'</tt>)
-</p>
-<p>The integer <var>pixel</var> must be a valid index into <var>colormap</var>.
-</p>
-<p><code>X:Color-Set!</code> changes the <var>colormap</var> entry of the read/write
-cell indexed by <var>pixel</var>. If the <var>colormap</var> is an installed map
-for its screen, the changes are visible immediately.
-</p>
-</dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:install-colormap</b><i> colormap</i>
-<a name="IDX150"></a>
-</dt>
-<dd><p>Installs the specified <var>colormap</var> for its associated screen. All
-windows associated with <var>colormap</var> immediately display with true
-colors. A colormap is associated with a window when the window is
-created or its attributes changed.
-</p>
-<p>If the specified colormap is not already an installed colormap, the X
-server generates a ColormapNotify event on each window that has that
-colormap.
-</p>
-</dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:ccc</b><i> colormap</i>
-<a name="IDX151"></a>
-</dt>
-<dd><p>Returns the Color-Conversion-Context of <var>colormap</var>.
-</p></dd></dl>
-
-
-</dd></dl>
-</dd></dl>
-</dd></dl>
-<hr size="6">
-<a name="Rendering"></a>
-<a name="SEC11"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC10" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC14" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC10" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC14" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 7. Rendering </h1>
-
-<dl>
-<dt><u>Function:</u> <b>x:flush</b><i> display</i>
-<a name="IDX152"></a>
-</dt>
-<dt><u>Function:</u> <b>x:flush</b><i> window</i>
-<a name="IDX153"></a>
-</dt>
-<dd><p>Flushes the output buffer. Some client applications need not use this
-function because the output buffer is automatically flushed as needed by
-calls to X:Pending, X:Next-Event, and X:Window-Event. Events generated
-by the server may be enqueued into the library's event queue.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:flush</b><i> gc</i>
-<a name="IDX154"></a>
-</dt>
-<dd><p>Forces sending of GC component changes.
-</p>
-<p>Xlib usually defers sending changes to the components of a GC to the
-server until a graphics function is actually called with that GC. This
-permits batching of component changes into a single server request. In
-some circumstances, however, it may be necessary for the client to
-explicitly force sending the changes to the server. An example might be
-when a protocol extension uses the GC indirectly, in such a way that the
-extension interface cannot know what GC will be used.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:clear-area</b><i> window (x-pos y-pos) (width height) expose?</i>
-<a name="IDX155"></a>
-</dt>
-<dd><p>Paints a rectangular area in the specified <var>window</var> according to the
-specified dimensions with the <var>window</var>'s background pixel or pixmap.
-The subwindow-mode effectively is <samp>`x:Clip-By-Children'</samp>. If width
-is zero, it is replaced with the current width of the <var>window</var> minus
-x. If height is zero, it is replaced with the current height of the
-<var>window</var> minus y. If the <var>window</var> has a defined background
-tile, the rectangle clipped by any children is filled with this tile.
-If the <var>window</var> has background x:None, the contents of the
-<var>window</var> are not changed. In either case, if <var>expose?</var> is True,
-one or more x:Expose events are generated for regions of the rectangle
-that are either visible or are being retained in a backing store. If
-you specify a <var>window</var> whose class is x:Input-Only, an error
-results.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:fill-rectangle</b><i> window gcontext position size</i>
-<a name="IDX156"></a>
-</dt>
-</dl>
-
-</dd></dl>
-<a name="SEC12"></a>
-<h2 class="heading"> Draw Strings </h2>
-
-<dl>
-<dt><u>Function:</u> <b>x:draw-string</b><i> drawable gc position string</i>
-<a name="IDX157"></a>
-</dt>
-<dd><p><var>Position</var> specifies coordinates relative to the origin of
-<var>drawable</var> of the origin of the first character to be drawn.
-</p>
-<p><code>x:draw-string</code> draws the characters of <var>string</var>, starting at
-<var>position</var>.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:image-string</b><i> drawable gc position string</i>
-<a name="IDX158"></a>
-</dt>
-<dd><p><var>Position</var> specifies coordinates relative to the origin of
-<var>drawable</var> of the origin of the first character to be drawn.
-</p>
-<p><code>x:image-string</code> draws the characters <em>and background</em> of
-<var>string</var>, starting at <var>position</var>.
-</p></dd></dl>
-
-<a name="SEC13"></a>
-<h2 class="heading"> Draw Shapes </h2>
-
-<dl>
-<dt><u>Function:</u> <b>x:draw-points</b><i> drawable gc position &hellip;</i>
-<a name="IDX159"></a>
-</dt>
-<dd><p><var>Position</var> &hellip; specifies coordinates of the point to be drawn.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:draw-points</b><i> drawable gc x y &hellip;</i>
-<a name="IDX160"></a>
-</dt>
-<dd><p>(<var>x</var>, <var>y</var>) &hellip; specifies coordinates of the point to be
-drawn.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:draw-points</b><i> drawable gc point-array</i>
-<a name="IDX161"></a>
-</dt>
-<dd><p><var>point-array</var> is a uniform short array of rank 2, whose rightmost
-index spans a range of 2.
-</p>
-<p>The <code>X:Draw-Points</code> procedure uses the foreground pixel and
-function components of the <var>gc</var> to draw points into <var>drawable</var>
-at the positions (relative to the origin of <var>drawable</var>) specified.
-</p>
-<p><code>X:Draw-Points</code> uses these <var>gc</var> components: function,
-planemask, foreground, subwindow-mode, clip-x-origin, clip-y-origin, and
-clip-mask.
-</p></dd></dl>
-
-
-<dl>
-<dt><u>Function:</u> <b>x:draw-segments</b><i> drawable gc pos1 pos2 &hellip;</i>
-<a name="IDX162"></a>
-</dt>
-<dd><p><var>Pos1</var>, <var>pos2</var>, &hellip; specify coordinates to be connected by
-segments.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:draw-segments</b><i> drawable gc x1 y1 x2 y2 &hellip;</i>
-<a name="IDX163"></a>
-</dt>
-<dd><p>(<var>x1</var>, <var>y1</var>), (<var>x2</var>, <var>y2</var>) &hellip; specify coordinates
-to be connected by segments.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:draw-segments</b><i> drawable gc point-array</i>
-<a name="IDX164"></a>
-</dt>
-<dd><p><var>point-array</var> is a uniform short array of rank 2, whose rightmost
-index spans a range of 2.
-</p>
-<p>The <code>X:Draw-Segments</code> procedure uses the components of the
-specified <var>gc</var> to draw multiple unconnected lines between disjoint
-adjacent pair of points passed as arguments. It draws the segments in
-order and does not perform joining at coincident endpoints. For any
-given line, <code>X:Draw-Segments</code> does not draw a pixel more than once.
-If thin (zero line-width) segments intersect, the intersecting pixels
-are drawn multiple times. If wide segments intersect, the intersecting
-pixels are drawn only once, as though the entire PolyLine protocol
-request were a single, filled shape. <code>X:Draw-Segments</code> treats all
-coordinates as relative to the origin of <var>drawable</var>.
-</p>
-<p><code>X:Draw-Segments</code> uses these <var>gc</var> components: function,
-plane-mask, line-width, line-style, cap-style, fill-style,
-subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask, join-style.
-It also use these <var>gc</var> mode-dependent components: foreground,
-background, tile, stipple, tilestipple-x-origin, tile-stipple-y-origin,
-dash-offset, and dash-list.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:draw-lines</b><i> drawable gc pos1 pos2 &hellip;</i>
-<a name="IDX165"></a>
-</dt>
-<dd><p><var>Pos1</var>, <var>pos2</var>, &hellip; specify coordinates to be connected by
-lines.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:draw-lines</b><i> drawable gc x1 y1 x2 y2 &hellip;</i>
-<a name="IDX166"></a>
-</dt>
-<dd><p>(<var>x1</var>, <var>y1</var>), (<var>x2</var>, <var>y2</var>) &hellip; specify coordinates
-to be connected by lines.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:draw-lines</b><i> drawable gc point-array</i>
-<a name="IDX167"></a>
-</dt>
-<dd><p><var>point-array</var> is a uniform short array of rank 2, whose rightmost
-index spans a range of 2.
-</p>
-<p>The <code>X:Draw-Lines</code> procedure uses the components of the specified
-<var>gc</var> to draw lines between each adjacent pair of points passed as
-arguments. It draws the lines in order. The lines join correctly at
-all intermediate points, and if the first and last points coincide, the
-first and last lines also join correctly. For any given line,
-<code>X:Draw-Lines</code> does not draw a pixel more than once. If thin (zero
-line-width) lines intersect, the intersecting pixels are drawn multiple
-times. If wide lines intersect, the intersecting pixels are drawn only
-once, as though the entire PolyLine protocol request were a single,
-filled shape. <code>X:Draw-Lines</code> treats all coordinates as relative to
-the origin of <var>drawable</var>.
-</p>
-<p><code>X:Draw-Lines</code> uses these <var>gc</var> components: function,
-plane-mask, line-width, line-style, cap-style, fill-style,
-subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask, join-style.
-It also use these <var>gc</var> mode-dependent components: foreground,
-background, tile, stipple, tilestipple-x-origin, tile-stipple-y-origin,
-dash-offset, and dash-list.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:fill-polygon</b><i> drawable gc pos1 pos2 &hellip;</i>
-<a name="IDX168"></a>
-</dt>
-<dd><p><var>Pos1</var>, <var>pos2</var>, &hellip; specify coordinates of the border path.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:fill-polygon</b><i> drawable gc x1 y1 x2 y2 &hellip;</i>
-<a name="IDX169"></a>
-</dt>
-<dd><p>(<var>x1</var>, <var>y1</var>), (<var>x2</var>, <var>y2</var>) &hellip; specify coordinates
-of the border path.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:fill-polygon</b><i> drawable gc point-array</i>
-<a name="IDX170"></a>
-</dt>
-<dd><p><var>point-array</var> is a uniform short array of rank 2, whose rightmost
-index spans a range of 2.
-</p>
-<p>The path is closed automatically if the last point in the list or
-<var>point-array</var> does not coincide with the first point.
-</p>
-<p>The <code>X:Fill-Polygon</code> procedure uses the components of the specified
-<var>gc</var> to fill the region closed by the specified path.
-<code>X:Fill-Polygon</code> does not draw a pixel of the region more than
-once. <code>X:Fill-Polygon</code> treats all coordinates as relative to the
-origin of <var>drawable</var>.
-</p>
-<p><code>X:Fill-Polygon</code> uses these <var>gc</var> components: function,
-planemask, fill-style, fill-rule, subwindow-mode, clip-x-origin,
-clip-y-origin, and clip-mask. It also use these <var>gc</var> mode-dependent
-components: foreground, background, tile, stipple,
-tile-stipple-x-origin, and tile-stipple-y-origin.
-</p></dd></dl>
-
-</dd></dl>
-</dd></dl>
-</dd></dl>
-</dd></dl>
-</dd></dl>
-</dd></dl>
-</dd></dl>
-</dd></dl>
-<hr size="6">
-<a name="Images"></a>
-<a name="SEC14"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC11" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC15" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC11" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC15" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 8. Images </h1>
-
-<dl>
-<dt><u>Function:</u> <b>x:read-bitmap-file</b><i> drawable file</i>
-<a name="IDX171"></a>
-</dt>
-</dl>
-
-<hr size="6">
-<a name="Event"></a>
-<a name="SEC15"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC14" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC14" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="chapter"> 9. Event </h1>
-
-
-<p>These three status routines always return immediately if there are
-events already in the queue.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:q-length</b><i> display</i>
-<a name="IDX172"></a>
-</dt>
-<dd><p>Returns the length of the event queue for the connected <var>display</var>.
-Note that there may be more events that have not been read into the
-queue yet (see X:Events-Queued).
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:pending</b><i> display</i>
-<a name="IDX173"></a>
-</dt>
-<dd><p>Returns the number of events that have been received from the X server
-but have not been removed from the event queue.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:events-queued</b><i> display</i>
-<a name="IDX174"></a>
-</dt>
-<dd><p>Returns the number of events already in the queue if the number is
-nonzero. If there are no events in the queue, <code>X:Events-Queued</code>
-attempts to read more events out of the application's connection without
-flushing the output buffer and returns the number read.
-</p></dd></dl>
-
-
-<p>Both of these routines return an object of type <em>event</em>.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:next-event</b><i> display</i>
-<a name="IDX175"></a>
-</dt>
-<dd><p>Removes and returns the first event from the event queue. If the event
-queue is empty, <code>X:Next-Event</code> flushes the output buffer and blocks
-until an event is received.
-</p></dd></dl>
-
-<dl>
-<dt><u>Function:</u> <b>x:peek-event</b><i> display</i>
-<a name="IDX176"></a>
-</dt>
-<dd><p>Returns the first event from the event queue, but it does not remove the
-event from the queue. If the queue is empty, <code>X:Peek-Event</code>
-flushes the output buffer and blocks until an event is received.
-</p></dd></dl>
-
-
-<p>Each event object has fields dependent on its sub-type.
-</p>
-<dl>
-<dt><u>Function:</u> <b>x:event-ref</b><i> event field-name</i>
-<a name="IDX177"></a>
-</dt>
-<dd><table>
-<tr><td><p> window
-</p></td><td>
-<p>The window on which <var>event</var> was generated and is referred to as the
-event window.
-</p></td></tr>
-<tr><td><p> root
-</p></td><td>
-<p>is the event window's root window.
-</p></td></tr>
-<tr><td><p> subwindow
-</p></td><td>
-<p>If the source window is an inferior of the event window, the
-<var>subwindow</var> is the child of the event window that is the source
-window or the child of the event window that is an ancestor of the
-source window. Otherwise, <samp>`None'</samp>.
-</p></td></tr>
-<tr><td><p> X-event:type
-</p></td><td>
-<p>An integer: <var>x:Key-Press</var>, <var>x:Key-Release</var>,
-<var>x:Button-Press</var>, <var>x:Button-Release</var>, <var>x:Motion-Notify</var>,
-<var>x:Enter-Notify</var>, <var>x:Leave-Notify</var>, <var>x:Focus-In</var>,
-<var>x:Focus-Out</var>, <var>x:Keymap-Notify</var>, <var>x:Expose</var>,
-<var>x:Graphics-Expose</var>, <var>x:No-Expose</var>, <var>x:Visibility-Notify</var>,
-<var>x:Create-Notify</var>, <var>x:Destroy-Notify</var>, <var>x:Unmap-Notify</var>,
-<var>x:Map-Notify</var>, <var>x:Map-Request</var>, <var>x:Reparent-Notify</var>,
-<var>x:Configure-Notify</var>, <var>x:Configure-Request</var>,
-<var>x:Gravity-Notify</var>, <var>x:Resize-Request</var>,
-<var>x:Circulate-Notify</var>, <var>x:Circulate-Request</var>,
-<var>x:Property-Notify</var>, <var>x:Selection-Clear</var>,
-<var>x:Selection-Request</var>, <var>x:Selection-Notify</var>,
-<var>x:Colormap-Notify</var>, <var>x:Client-Message</var>, or
-<var>x:Mapping-Notify</var>.
-</p></td></tr>
-<tr><td><p> X-event:serial
-</p></td><td>
-<p>The serial number of the protocol request that generated the <var>event</var>.
-</p></td></tr>
-<tr><td><p> X-event:send-event
-</p></td><td>
-<p>Boolean that indicates whether the event was sent by a different client.
-</p></td></tr>
-<tr><td><p> X-event:time
-</p></td><td>
-<p>The time when the <var>event</var> was generated expressed in milliseconds.
-</p></td></tr>
-<tr><td><p> X-event:x
-</p></td></tr>
-<tr><td><p> X-event:y
-</p></td><td>
-<p>For window entry/exit events the <var>x</var> and <var>y</var> members are set to
-the coordinates of the pointer position in the event window. This
-position is always the pointer's final position, not its initial
-position. If the event window is on the same screen as the root window,
-<var>x</var> and <var>y</var> are the pointer coordinates relative to the event
-window's origin. Otherwise, <var>x</var> and <var>y</var> are set to zero.
-</p>
-<p>For expose events The <var>x</var> and <var>y</var> members are set to the
-coordinates relative to the drawable's origin and indicate the
-upper-left corner of the rectangle.
-</p>
-<p>For configure, create, gravity, and reparent events the <var>x</var> and
-<var>y</var> members are set to the window's coordinates relative to the
-parent window's origin and indicate the position of the upper-left
-outside corner of the created window.
-</p></td></tr>
-<tr><td><p> X-event:x-root
-</p></td></tr>
-<tr><td><p> X-event:y-root
-</p></td><td>
-<p>The pointer's coordinates relative to the root window's origin at the
-time of the <var>event</var>.
-</p></td></tr>
-<tr><td><p> X-event:state
-</p></td><td>
-<p>For keyboard, pointer and window entry/exit events, the state member is
-set to indicate the logical state of the pointer buttons and modifier
-keys just prior to the <var>event</var>, which is the bitwise inclusive OR of
-one or more of the button or modifier key masks: <var>x:Button1-Mask</var>,
-<var>x:Button2-Mask</var>, <var>x:Button3-Mask</var>, <var>x:Button4-Mask</var>,
-<var>x:Button5-Mask</var>, <var>x:Shift-Mask</var>, <var>x:Lock-Mask</var>,
-<var>x:Control-Mask</var>, <var>x:Mod1-Mask</var>, <var>x:Mod2-Mask</var>,
-<var>x:Mod3-Mask</var>, <var>x:Mod4-Mask</var>, and <var>x:Mod5-Mask</var>.
-</p>
-<p>For visibility events, the state of the window's visibility:
-<var>x:Visibility-Unobscured</var>, <var>x:Visibility-Partially-Obscured</var>, or
-<var>x:Visibility-Fully-Obscured</var>.
-</p>
-<p>For colormap events, indicates whether the colormap is installed or
-uninstalled: x:Colormap-Installed or x:Colormap-Uninstalled.
-</p>
-<p>For property events, indicates whether the property was changed to a new
-value or deleted: x:Property-New-Value or x:Property-Delete.
-</p></td></tr>
-<tr><td><p> X-event:keycode
-</p></td><td>
-<p>An integer that represents a physical key on the keyboard.
-</p></td></tr>
-<tr><td><p> X-event:same-screen
-</p></td><td>
-<p>Indicates whether the event window is on the same screen as the root
-window. If #t, the event and root windows are on the same screen. If
-#f, the event and root windows are not on the same screen.
-</p></td></tr>
-<tr><td><p> X-event:button
-</p></td><td>
-<p>The pointer button that changed state; can be the <var>x:Button1</var>,
-<var>x:Button2</var>, <var>x:Button3</var>, <var>x:Button4</var>, or <var>x:Button5</var>
-value.
-</p></td></tr>
-<tr><td><p> X-event:is-hint
-</p></td><td>
-<p>Detail of motion-notify events: <var>x:Notify-Normal</var> or
-<var>x:Notify-Hint</var>.
-</p></td></tr>
-<tr><td><p> X-event:mode
-</p></td><td>
-<p>Indicates whether the <var>event</var> is a normal event, pseudo-motion event
-when a grab activates, or a pseudo-motion event when a grab deactivates:
-<var>x:Notify-Normal</var>, <var>x:Notify-Grab</var>, or <var>x:Notify-Ungrab</var>.
-</p></td></tr>
-<tr><td><p> X-event:detail
-</p></td><td>
-<p>Indicates the notification detail: <var>x:Notify-Ancestor</var>,
-<var>x:Notify-Virtual</var>, <var>x:Notify-Inferior</var>,
-<var>x:Notify-Nonlinear</var>, or <var>x:Notify-Nonlinear-Virtual</var>.
-</p></td></tr>
-<tr><td><p> X-event:focus
-</p></td><td>
-<p>If the event window is the focus window or an inferior of the focus
-window, #t; otherwise #f.
-</p></td></tr>
-<tr><td><p> X-event:width
-</p></td></tr>
-<tr><td><p> X-event:height
-</p></td><td>
-<p>The size (extent) of the rectangle.
-</p></td></tr>
-<tr><td><p> X-event:count
-</p></td><td>
-<p>For mapping events is the number of keycodes altered.
-</p>
-<p>For expose events Is the number of Expose or GraphicsExpose events that
-are to follow. If count is zero, no more Expose events follow for this
-window. However, if count is nonzero, at least that number of Expose
-events (and possibly more) follow for this window. Simple applications
-that do not want to optimize redisplay by distinguishing between
-subareas of its window can just ignore all Expose events with nonzero
-counts and perform full redisplays on events with zero counts.
-</p></td></tr>
-<tr><td><p> X-event:major-code
-</p></td><td>
-<p>The major_code member is set to the graphics request initiated by the
-client and can be either X_CopyArea or X_CopyPlane. If it is
-X_CopyArea, a call to XCopyArea initiated the request. If it is
-X_CopyPlane, a call to XCopyPlane initiated the request.
-</p></td></tr>
-<tr><td><p> X-event:minor-code
-</p></td><td>
-<p>Not currently used.
-</p></td></tr>
-<tr><td><p> X-event:border-width
-</p></td><td>
-<p>For configure events, the width of the window's border, in pixels.
-</p></td></tr>
-<tr><td><p> X-event:override-redirect
-</p></td><td>
-<p>The override-redirect attribute of the window. Window manager clients
-normally should ignore this window if it is #t.
-</p></td></tr>
-<tr><td><p> X-event:from-configure
-</p></td><td>
-<p>True if the event was generated as a result of a resizing of the
-window's parent when the window itself had a win-gravity of
-x:Unmap-Gravity.
-</p></td></tr>
-<tr><td><p> X-event:value-mask
-</p></td><td>
-<p>Indicates which components were specified in the ConfigureWindow
-protocol request. The corresponding values are reported as given in the
-request. The remaining values are filled in from the current geometry
-of the window, except in the case of above (sibling) and detail
-(stack-mode), which are reported as None and Above, respectively, if
-they are not given in the request.
-</p></td></tr>
-<tr><td><p> X-event:place
-</p></td><td>
-<p>The window's position after the restack occurs and is either
-x:Place-On-Top or x:Place-On-Bottom. If it is x:Place-On-Top, the
-window is now on top of all siblings. If it is x:Place-On-Bottom, the
-window is now below all siblings.
-</p></td></tr>
-<tr><td><p> X-event:new
-</p></td><td>
-<p>indicate whether the colormap for the specified window was changed or
-installed or uninstalled and can be True or False. If it is True, the
-colormap was changed. If it is False, the colormap was installed or
-uninstalled.
-</p></td></tr>
-<tr><td><p> X-event:format
-</p></td><td>
-<p>Is 8, 16, or 32 and specifies whether the data should be viewed as a
-list of bytes, shorts, or longs
-</p></td></tr>
-<tr><td><p> X-event:request
-</p></td><td>
-<p>Indicates the kind of mapping change that occurred and can be
-<var>x:Mapping-Modifier</var>, <var>x:Mapping-Keyboard</var>, or
-<var>x:Mapping-Pointer</var>. If it is <var>x:Mapping-Modifier</var>, the
-modifier mapping was changed. If it is <var>x:Mapping-Keyboard</var>, the
-keyboard mapping was changed. If it is <var>x:Mapping-Pointer</var>, the
-pointer button mapping was changed.
-</p></td></tr>
-<tr><td><p> X-event:first-keycode
-</p></td><td>
-<p>The X-event:first-keycode is set only if the X-event:request was set to
-<var>x:Mapping-Keyboard</var>. The number in X-event:first-keycode
-represents the first number in the range of the altered mapping, and
-X-event:count represents the number of keycodes altered.
-</p></td></tr>
-</table>
-</dd></dl>
-
-<hr size="6">
-<a name="Index"></a>
-<a name="SEC16"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC15" title="Previous section in reading order"> &lt; </a>]</td>
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-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC15" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC17" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="unnumbered"> Procedure and Macro Index </h1>
-
-<p>This is an alphabetical list of all the procedures and macros in Xlibscm.
-</p>
-<table><tr><th valign="top">Jump to: &nbsp; </th><td><a href="#SEC16_0" class="summary-letter"><b>H</b></a>
- &nbsp;
-<a href="#SEC16_1" class="summary-letter"><b>X</b></a>
- &nbsp;
-</td></tr></table>
-<table border="0" class="index-fn">
-<tr><td></td><th align="left">Index Entry</th><th align="left"> Section</th></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC16_0">H</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX4"><code>hostname:number.screen-number</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC16_1">X</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX139"><code>x:alloc-colormap-cells</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX140"><code>x:alloc-colormap-cells</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX141"><code>x:alloc-colormap-cells</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX142"><code>x:alloc-colormap-cells</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX151"><code>x:ccc</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX155"><code>x:clear-area</code></a></td><td valign="top"><a href="#SEC11">7. Rendering</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX5"><code>x:close</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX63"><code>x:close</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX64"><code>x:close</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX147"><code>x:color-ref</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX148"><code>X:Color-Set!</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX149"><code>X:Color-Set!</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX145"><code>x:colormap-find-color</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX146"><code>x:colormap-find-color</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX138"><code>x:copy-colormap-and-free</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX104"><code>x:copy-gc-fields!</code></a></td><td valign="top"><a href="#SEC7">4. Graphics Context</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX137"><code>x:create-colormap</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX131"><code>x:create-cursor</code></a></td><td valign="top"><a href="#SEC9">5. Cursor</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX133"><code>x:create-cursor</code></a></td><td valign="top"><a href="#SEC9">5. Cursor</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX134"><code>x:create-cursor</code></a></td><td valign="top"><a href="#SEC9">5. Cursor</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX135"><code>x:create-cursor</code></a></td><td valign="top"><a href="#SEC9">5. Cursor</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX136"><code>x:create-cursor</code></a></td><td valign="top"><a href="#SEC9">5. Cursor</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX102"><code>x:create-gc</code></a></td><td valign="top"><a href="#SEC7">4. Graphics Context</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX61"><code>x:create-pixmap</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX62"><code>x:create-pixmap</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX59"><code>x:create-window</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX60"><code>x:create-window</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX17"><code>x:default-ccc</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX18"><code>x:default-ccc</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX19"><code>x:default-ccc</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX14"><code>x:default-colormap</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX15"><code>x:default-colormap</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX16"><code>x:default-colormap</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX20"><code>x:default-gc</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX21"><code>x:default-gc</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX22"><code>x:default-gc</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX10"><code>x:default-screen</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX26"><code>x:default-visual</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX27"><code>x:default-visual</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX28"><code>x:default-visual</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX165"><code>x:draw-lines</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX166"><code>x:draw-lines</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX167"><code>x:draw-lines</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX159"><code>x:draw-points</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX160"><code>x:draw-points</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX161"><code>x:draw-points</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX162"><code>x:draw-segments</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX163"><code>x:draw-segments</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX164"><code>x:draw-segments</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX157"><code>x:draw-string</code></a></td><td valign="top"><a href="#SEC12">Draw Strings</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX177"><code>x:event-ref</code></a></td><td valign="top"><a href="#SEC15">9. Event</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX174"><code>x:events-queued</code></a></td><td valign="top"><a href="#SEC15">9. Event</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX168"><code>x:fill-polygon</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX169"><code>x:fill-polygon</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX170"><code>x:fill-polygon</code></a></td><td valign="top"><a href="#SEC13">Draw Shapes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX156"><code>x:fill-rectangle</code></a></td><td valign="top"><a href="#SEC11">7. Rendering</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX152"><code>x:flush</code></a></td><td valign="top"><a href="#SEC11">7. Rendering</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX153"><code>x:flush</code></a></td><td valign="top"><a href="#SEC11">7. Rendering</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX154"><code>x:flush</code></a></td><td valign="top"><a href="#SEC11">7. Rendering</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX143"><code>x:free-colormap-cells</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX144"><code>x:free-colormap-cells</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX105"><code>x:gc-ref</code></a></td><td valign="top"><a href="#SEC7">4. Graphics Context</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX103"><code>x:gc-set!</code></a></td><td valign="top"><a href="#SEC7">4. Graphics Context</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX91"><code>x:get-window-property</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX92"><code>x:get-window-property</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX158"><code>x:image-string</code></a></td><td valign="top"><a href="#SEC12">Draw Strings</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX150"><code>x:install-colormap</code></a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX93"><code>x:list-properties</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX31"><code>x:make-visual</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX32"><code>x:make-visual</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX99"><code>x:map-subwindows</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX98"><code>x:map-window</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX175"><code>x:next-event</code></a></td><td valign="top"><a href="#SEC15">9. Event</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX3"><code>x:open-display</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX176"><code>x:peek-event</code></a></td><td valign="top"><a href="#SEC15">9. Event</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX173"><code>x:pending</code></a></td><td valign="top"><a href="#SEC15">9. Event</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX6"><code>x:protocol-version</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX172"><code>x:q-length</code></a></td><td valign="top"><a href="#SEC15">9. Event</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX171"><code>x:read-bitmap-file</code></a></td><td valign="top"><a href="#SEC14">8. Images</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX11"><code>x:root-window</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX12"><code>x:root-window</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX13"><code>x:root-window</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX56"><code>x:screen-black</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX57"><code>x:screen-black</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX58"><code>x:screen-black</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX39"><code>x:screen-cells</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX40"><code>x:screen-cells</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX41"><code>x:screen-cells</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX9"><code>x:screen-count</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX42"><code>x:screen-depth</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX43"><code>x:screen-depth</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX44"><code>x:screen-depth</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX45"><code>x:screen-depth</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX23"><code>x:screen-depths</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX24"><code>x:screen-depths</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX25"><code>x:screen-depths</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX50"><code>x:screen-dimensions</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX51"><code>x:screen-dimensions</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX52"><code>x:screen-dimensions</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX47"><code>x:screen-size</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX48"><code>x:screen-size</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX49"><code>x:screen-size</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX53"><code>x:screen-white</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX54"><code>x:screen-white</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX55"><code>x:screen-white</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX7"><code>x:server-vendor</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX101"><code>x:unmap-subwindows</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX100"><code>x:unmap-window</code></a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX8"><code>x:vendor-release</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX33"><code>x:visual-class</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX34"><code>x:visual-class</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX35"><code>x:visual-class</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX36"><code>x:visual-geometry</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX37"><code>x:visual-geometry</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX38"><code>x:visual-geometry</code></a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX65"><code>x:window-geometry</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX66"><code>x:window-geometry-set!</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX90"><code>x:window-ref</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX74"><code>x:window-set!</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-</table>
-<table><tr><th valign="top">Jump to: &nbsp; </th><td><a href="#SEC16_0" class="summary-letter"><b>H</b></a>
- &nbsp;
-<a href="#SEC16_1" class="summary-letter"><b>X</b></a>
- &nbsp;
-</td></tr></table>
-
-<hr size="6">
-<a name="SEC17"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC16" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC18" title="Next section in reading order"> &gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[<a href="#SEC18" title="Next chapter"> &gt;&gt; </a>]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="unnumbered"> Variable Index </h1>
-
-<p>This is an alphabetical list of all the global variables in Xlibscm.
-</p>
-<table><tr><th valign="top">Jump to: &nbsp; </th><td><a href="#SEC17_0" class="summary-letter"><b>X</b></a>
- &nbsp;
-</td></tr></table>
-<table border="0" class="index-vr">
-<tr><td></td><th align="left">Index Entry</th><th align="left"> Section</th></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC17_0">X</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX76"><code>x:CW-Back-Pixel</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX75"><code>x:CW-Back-Pixmap</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX83"><code>x:CW-Backing-Pixel</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX82"><code>x:CW-Backing-Planes</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX81"><code>x:CW-Backing-Store</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX79"><code>x:CW-Bit-Gravity</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX78"><code>x:CW-Border-Pixel</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX77"><code>x:CW-Border-Pixmap</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX71"><code>x:CW-Border-Width</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX88"><code>x:CW-Colormap</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX89"><code>x:CW-Cursor</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX87"><code>x:CW-Dont-Propagate</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX86"><code>x:CW-Event-Mask</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX70"><code>x:CW-Height</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX84"><code>x:CW-Override-Redirect</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX85"><code>x:CW-Save-Under</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX72"><code>x:CW-Sibling</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX73"><code>x:CW-Stack-Mode</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX69"><code>x:CW-Width</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX80"><code>x:CW-Win-Gravity</code></a></td><td valign="top"><a href="#SEC5">3.2 Window Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX67"><code>x:CWX</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX68"><code>x:CWY</code></a></td><td valign="top"><a href="#SEC4">3.1 Windows and Pixmaps</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX130"><code>x:GC-Arc-Mode</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX109"><code>x:GC-Background</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX112"><code>x:GC-Cap-Style</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX125"><code>x:GC-Clip-Mask</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX123"><code>x:GC-Clip-X-Origin</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX124"><code>x:GC-Clip-Y-Origin</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX129"><code>x:GC-Dash-List</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX128"><code>x:GC-Dash-Offset</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX115"><code>x:GC-Fill-Rule</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX114"><code>x:GC-Fill-Style</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX120"><code>x:GC-Font</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX108"><code>x:GC-Foreground</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX106"><code>x:GC-Function</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX122"><code>x:GC-Graphics-Exposures</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX113"><code>x:GC-Join-Style</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX111"><code>x:GC-Line-Style</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX110"><code>x:GC-Line-Width</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX107"><code>x:GC-Plane-Mask</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX117"><code>x:GC-Stipple</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX121"><code>x:GC-Subwindow-Mode</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX116"><code>x:GC-Tile</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX118"><code>x:GC-Tile-Stip-X-Origin</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX119"><code>x:GC-Tile-Stip-Y-Origin</code></a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-</table>
-<table><tr><th valign="top">Jump to: &nbsp; </th><td><a href="#SEC17_0" class="summary-letter"><b>X</b></a>
- &nbsp;
-</td></tr></table>
-
-<p>This is an alphabetical list of concepts introduced in this manual.
-</p>
-<hr size="6">
-<a name="SEC18"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#SEC17" title="Previous section in reading order"> &lt; </a>]</td>
-<td valign="middle" align="left">[ &gt; ]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#SEC17" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
-<td valign="middle" align="left">[<a href="#Top" title="Up section"> Up </a>]</td>
-<td valign="middle" align="left">[ &gt;&gt; ]</td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left"> &nbsp; </td>
-<td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1 class="unnumbered"> Concept Index </h1>
-<table><tr><th valign="top">Jump to: &nbsp; </th><td><a href="#SEC18_0" class="summary-letter"><b>C</b></a>
- &nbsp;
-<a href="#SEC18_1" class="summary-letter"><b>D</b></a>
- &nbsp;
-<a href="#SEC18_2" class="summary-letter"><b>M</b></a>
- &nbsp;
-<a href="#SEC18_3" class="summary-letter"><b>N</b></a>
- &nbsp;
-<a href="#SEC18_4" class="summary-letter"><b>R</b></a>
- &nbsp;
-<a href="#SEC18_5" class="summary-letter"><b>U</b></a>
- &nbsp;
-<a href="#SEC18_6" class="summary-letter"><b>V</b></a>
- &nbsp;
-<a href="#SEC18_7" class="summary-letter"><b>X</b></a>
- &nbsp;
-</td></tr></table>
-<table border="0" class="index-cp">
-<tr><td></td><th align="left">Index Entry</th><th align="left"> Section</th></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_0">C</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#SEC10">colormap</a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX132">cursor</a></td><td valign="top"><a href="#SEC9">5. Cursor</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_1">D</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX46">depth</a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#SEC3">drawable</a></td><td valign="top"><a href="#SEC3">3. Drawables</a></td></tr>
-<tr><td></td><td valign="top"><a href="#SEC3">Drawable</a></td><td valign="top"><a href="#SEC3">3. Drawables</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_2">M</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX94">map</a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX96">mapped</a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_3">N</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX127">none</a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_4">R</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#SEC10">RGB</a></td><td valign="top"><a href="#SEC10">6. Colormap</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_5">U</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX95">unmap</a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX97">unmapped</a></td><td valign="top"><a href="#SEC6">3.3 Window Properties and Visibility</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_6">V</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX29">visual</a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX30">Visual</a></td><td valign="top"><a href="#SEC2">2. Display and Screens</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-<tr><th><a name="SEC18_7">X</a></th><td></td><td></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX1">X</a></td><td valign="top"><a href="#SEC1">1. Xlibscm</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX126">x:None</a></td><td valign="top"><a href="#SEC8">GC Attributes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#IDX2"><code>Xlib</code></a></td><td valign="top"><a href="#SEC1">1. Xlibscm</a></td></tr>
-<tr><td colspan="3"> <hr></td></tr>
-</table>
-<table><tr><th valign="top">Jump to: &nbsp; </th><td><a href="#SEC18_0" class="summary-letter"><b>C</b></a>
- &nbsp;
-<a href="#SEC18_1" class="summary-letter"><b>D</b></a>
- &nbsp;
-<a href="#SEC18_2" class="summary-letter"><b>M</b></a>
- &nbsp;
-<a href="#SEC18_3" class="summary-letter"><b>N</b></a>
- &nbsp;
-<a href="#SEC18_4" class="summary-letter"><b>R</b></a>
- &nbsp;
-<a href="#SEC18_5" class="summary-letter"><b>U</b></a>
- &nbsp;
-<a href="#SEC18_6" class="summary-letter"><b>V</b></a>
- &nbsp;
-<a href="#SEC18_7" class="summary-letter"><b>X</b></a>
- &nbsp;
-</td></tr></table>
-
-<hr size="6">
-<a name="SEC_Contents"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1>Table of Contents</h1>
-<div class="contents">
-
-<ul class="toc">
- <li><a name="TOC1" href="#SEC1">1. Xlibscm</a></li>
- <li><a name="TOC2" href="#SEC2">2. Display and Screens</a></li>
- <li><a name="TOC3" href="#SEC3">3. Drawables</a>
- <ul class="toc">
- <li><a name="TOC4" href="#SEC4">3.1 Windows and Pixmaps</a></li>
- <li><a name="TOC5" href="#SEC5">3.2 Window Attributes</a></li>
- <li><a name="TOC6" href="#SEC6">3.3 Window Properties and Visibility</a></li>
- </ul></li>
- <li><a name="TOC7" href="#SEC7">4. Graphics Context</a></li>
- <li><a name="TOC8" href="#SEC9">5. Cursor</a></li>
- <li><a name="TOC9" href="#SEC10">6. Colormap</a></li>
- <li><a name="TOC10" href="#SEC11">7. Rendering</a></li>
- <li><a name="TOC11" href="#SEC14">8. Images</a></li>
- <li><a name="TOC12" href="#SEC15">9. Event</a></li>
- <li><a name="TOC13" href="#SEC16">Procedure and Macro Index</a></li>
- <li><a name="TOC14" href="#SEC17">Variable Index</a></li>
- <li><a name="TOC15" href="#SEC18">Concept Index</a></li>
-</ul>
-</div>
-<hr size="1">
-<a name="SEC_About"></a>
-<table cellpadding="1" cellspacing="1" border="0">
-<tr><td valign="middle" align="left">[<a href="#Top" title="Cover (top) of document">Top</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_Contents" title="Table of contents">Contents</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC16" title="Index">Index</a>]</td>
-<td valign="middle" align="left">[<a href="#SEC_About" title="About (help)"> ? </a>]</td>
-</tr></table>
-<h1>About This Document</h1>
-<p>
- This document was generated by <em>Thomas Bushnell BSG</em> on <em>January, 9 2006</em> using <a href="http://texi2html.cvshome.org/"><em>texi2html 1.76</em></a>.
-</p>
-<p>
- The buttons in the navigation panels have the following meaning:
-</p>
-<table border="1">
- <tr>
- <th> Button </th>
- <th> Name </th>
- <th> Go to </th>
- <th> From 1.2.3 go to</th>
- </tr>
- <tr>
- <td align="center"> [ &lt; ] </td>
- <td align="center">Back</td>
- <td>previous section in reading order</td>
- <td>1.2.2</td>
- </tr>
- <tr>
- <td align="center"> [ &gt; ] </td>
- <td align="center">Forward</td>
- <td>next section in reading order</td>
- <td>1.2.4</td>
- </tr>
- <tr>
- <td align="center"> [ &lt;&lt; ] </td>
- <td align="center">FastBack</td>
- <td>beginning of this chapter or previous chapter</td>
- <td>1</td>
- </tr>
- <tr>
- <td align="center"> [ Up ] </td>
- <td align="center">Up</td>
- <td>up section</td>
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- where the <strong> Example </strong> assumes that the current position is at <strong> Subsubsection One-Two-Three </strong> of a document of the following structure:
-</p>
-
-<ul>
- <li> 1. Section One
- <ul>
- <li>1.1 Subsection One-One
- <ul>
- <li>...</li>
- </ul>
- </li>
- <li>1.2 Subsection One-Two
- <ul>
- <li>1.2.1 Subsubsection One-Two-One</li>
- <li>1.2.2 Subsubsection One-Two-Two</li>
- <li>1.2.3 Subsubsection One-Two-Three &nbsp; &nbsp;
- <strong>&lt;== Current Position </strong></li>
- <li>1.2.4 Subsubsection One-Two-Four</li>
- </ul>
- </li>
- <li>1.3 Subsection One-Three
- <ul>
- <li>...</li>
- </ul>
- </li>
- <li>1.4 Subsection One-Four</li>
- </ul>
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-
-<hr size="1">
-<p>
- <font size="-1">
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