Added Lots of Documentation

Added some nice to haves
Improved and Unified General Code Layout

MathKit/MPFractionFunctionLayout.h

@@ -9,12 +9,32 @@
 #import "MPFunctionLayout.h"
 
 
+/*!
+ @header
+ This file contains the <code>MPFractionFunctionLayout</code> class.
+ */
+
+
 
 @class MPFractionFunctionLayout, MPFractionFunction;
 
 
+/*!
+    @class      MPFractionFunctionLayout
+    @abstract   A fraction function layout displays a <code>@link
+                //apple_ref/occ/cl/MPFractionFunction@/link</code>.
+ 
+    @discussion The nominator is displayed above the denominator. Between the two
+                children a horizontal bar is drawn.
+ */
 @interface MPFractionFunctionLayout : MPFunctionLayout
 
+/*!
+    @method     fractionFunction
+    @abstract   Returns the <code>@link
+                //apple_ref/occ/cl/MPFractionFunction@/link</code> represented by
+                the receiver.
+ */
 - (MPFractionFunction *)fractionFunction;
 
 @end