Index: /CKEditor/trunk/_source/core/tools.js
===================================================================
--- /CKEditor/trunk/_source/core/tools.js	(revision 5629)
+++ /CKEditor/trunk/_source/core/tools.js	(revision 5630)
@@ -221,4 +221,8 @@
 		},
 
+		/**
+		 * Whether the object contains no properties of it's own.
+ 		 * @param object
+		 */
 		isEmpty : function ( object )
 		{
@@ -230,4 +234,5 @@
 			return true;
 		},
+
 		/**
 		 * Transforms a CSS property name to its relative DOM style name.
@@ -669,4 +674,8 @@
 		},
 
+		/**
+		 * Append the 'px' length unit to the size if it's missing.
+		 * @param length
+		 */
 		cssLength : (function()
 		{
@@ -678,4 +687,9 @@
 		})(),
 
+		/**
+		 * String specified by {@param str} repeats {@param times} times.
+		 * @param str
+		 * @param times
+		 */
 		repeat : function( str, times )
 		{
@@ -683,4 +697,8 @@
 		},
 
+		/**
+		 * Return the first successfully executed function's return value that
+		 * doesn't throw any exception.
+		 */
 		tryThese : function()
 		{