Added Documentation

MathPad/MPExpressionTokenizer.h

@@ -6,10 +6,32 @@
 //  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
 //
 
+
+
 @class MPExpressionTokenizer, MPExpression;
 
+
+/*!
+    @class      MPExpressionTokenizer
+    @brief      The expression tokenizer class convers an @c MPExpression
+                instance into an array of tokens.
+ */
 @interface MPExpressionTokenizer : NSObject
 
+
+/*!
+    @method     tokenizeExpression:
+    @brief      Converts an @c MPExpression instance into an array of tokens.
+ 
+    @discussion The objects in the returned array all conform to the @c MPToken
+                protocol. Function tokens are not copied from the @c expression
+                so they can still be mutated.
+ 
+    @param      expression
+                The expression to be tokenized.
+ 
+    @return     An array of objects that conform to the @c MPToken protocol.
+ */
 + (NSArray *)tokenizeExpression:(MPExpression *)expression; // Returns MPToken's
 
 @end