arduino language reference nearing completion, properly CC-BY-SA 3.0 attributed

1 files changed, 23 insertions, 29 deletions

diff --git a/source/arduino/const.rst b/source/arduino/const.rst
index 295b817..4a45387 100644
--- a/source/arduino/const.rst
+++ b/source/arduino/const.rst
@@ -1,37 +1,35 @@
+.. highlight:: cpp
+
 .. _arduino-const:
 
-const keyword
+const Keyword
 =============
 
-The **const** keyword stands for constant. It is a variable
+The ``const`` keyword stands for "constant". It is a variable
 *qualifier* that modifies the behavior of the variable, making a
-variable "*read-only*". This means that the variable can be used
-just as any other variable of its type, but its value cannot be
-changed. You will get a compiler error if you try to assign a value
-to a **const** variable.
-
-
-
-Constants defined with the *const* keyword obey the rules of
-*`variable scoping <http://arduino.cc/en/Reference/Scope>`_* that
-govern other variables. This, and the pitfalls of using*#define*,
-makes the *const* keyword a superior method for defining constants
-and is preferred over using
-*`#define <http://arduino.cc/en/Reference/Define>`_*.
-
+variable "*read-only*". This means that the variable can be used just
+as any other variable of its type, but its value cannot be
+changed. You will get a compiler error if you try to assign a value to
+a ``const`` variable.
 
+Constants defined with the ``const`` keyword obey the same rules of
+:ref:`variable scoping <arduino-scope>` that govern other
+variables. This, and the pitfalls of using :ref:`#define
+<arduino-define>`, often makes using the ``const`` keyword a superior
+method for defining constants than ``#define``.
 
 Example
 -------
 
 ::
 
+    // this defines a variable called "pi", which cannot be changed:
     const float pi = 3.14;
     float x;
     
     // ....
     
-    x = pi * 2;    // it's fine to use const's in math
+    x = pi * 2;    // it's fine to find the value of a const variable
     
     pi = 7;        // illegal - you can't write to (modify) a constant
     
@@ -39,17 +37,13 @@ Example
 **#define** or **const**
 ------------------------
 
-You can use either **const** or **#define** for creating numeric or
-string constants. For
-`arrays <http://arduino.cc/en/Reference/Array>`_, you will need to
-use **const**. In general *const* is preferred over *#define* for
-defining constants.
-
-
-
-See also:
-
+You can use either ``const`` or ``#define`` for creating numeric or
+string constants. For :ref:`arrays <arduino-array>`\ , you will need
+to use ``const``. In general, ``const`` is preferred over ``#define``
+for defining constants.
 
--  `#define <http://arduino.cc/en/Reference/Define>`_
--  `volatile <http://arduino.cc/en/Reference/Volatile>`_
+See Also
+--------
 
+-  :ref:`#define <arduino-define>`
+-  :ref:`volatile <arduino-volatile>`