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-                                                                                                                                                                                                                                                               
--*-mode: Text; tab-width: 4; -*-

-

-						  EDWIN CHEAT SHEET

-					   (keep under your pillow)

-

-						   6.090, IAP 2005

-

-Reading Edwin key combinations:

-	C-x									Ctrl+x

-	M-x									Alt+x

-	C-x, y								Ctrl+x, release both, y

-	C-M-x								Ctrl+Alt+x

-

-Stuff You *Need* to Know:

-	Starting Edwin						Start Menu > MIT Scheme > Edwin

-	Quitting Edwin						C-x, C-c

-	Opening a file						C-x, C-f

-	Closing a file (aka buffer)			C-x, k

-	Evaluate current expression 		C-x, C-e

-	(expression ending just before 

-	insertion point)

-	Evaluate entire buffer

-	(works only on Scheme files!)		M-o

-

-The Edwin Window and Scheme:

-	When you start it, the Edwin window looks like a plain text

-	editor. It has a large blank area for entering text, one black

-	line at the bottom with some information displayed (the modeline),

-	and a blank white line below that (the minibuffer). 

-

-	The text area

-		is where the file you're viewing shows up. You can edit the

-		file here, with the usual keys (up, down, page up, left... you

-		get the idea).

-

-	The modeline

-		displays the name of the current buffer (file), your position

-		in it, and the kind of file Edwin thinks it is (text, scheme

-		code etc.).

-

-	The minibuffer 

-		is where you interact with Edwin's commands. For example, when

-		you press C-x, C-f to open a file, you enter the filename in

-		the minibuffer.

-

-	Edwin is more than just an editor, though. It also features a

-	Scheme evaluator, to which it can send your code. So when you

-	press C-x, C-e at the end of an expression, it gets evaluated by

-	this evaluator (more on evaluators and evaluation in class).

-

-	Try out the key combinations below to see what they do. Don't try

-	to memorize them. Your finger muscles will learn them as time goes

-	on :-)

-

-Inessential Edwin:

-							   Editing

-	Marking/selecting text				Go to one end of the block, press 

-					  					C-space, go to the other end. You won't

-										see any visual indication of the 

-										selection.

-	Cut									C-w

-	Copy								M-w

-	Paste								C-y

-	Cut from point to end of like		C-k

-

-					 Multiple Windows and Buffers

-	Switch buffer	 		  		  	C-x, b

-	Switch window						C-x, o

-	Split window vertically				C-x, 2

-	Split window horizontally			C-x, 3

-	Delete current split				C-x, 0

-	Create new frame (window)			C-x, 5, 2

-	Delete current frame				C-x, 5, 0

-

-Interactive Scheme:

-	When you are in the buffer called *scheme*, everything you type goes

-	directly to the evaluator, and the results are displayed below your

-	expressions. When you make an error, the evaluator gives you a set of

-	choices to help you debug your code. Usually, it is best to type (restart 1)

-	at the next prompt to abort the current evaluation, so you can go back and

-	examine your code to see what went wrong. For more advanced debugging tools,

-	talk to an LA.

-