internal package Foswiki::UI::RDiff 
  internal package Foswiki::UI::RDiff 
UI functions for diffing.
  StaticMethod diff( $session ) 
diff command handler.
This method is designed to be
invoked via the 
UI::run method.
Renders the differences between version of a topic
	
		
			|  topic  | 
			 topic that we are showing the differences of  | 
		
		
			|  rev1  | 
			 the higher revision  | 
		
		
			|  rev2  | 
			 the lower revision  | 
		
		
			|  render  | 
			 the rendering style {sequential, sidebyside, raw, debug}  | 
			 (preferences) DIFFRENDERSTYLE, sequential  | 
		
		
			|  type  | 
			 {history, diff, last} history diff, version to version, last version to previous  | 
			 history  | 
		
		
			|  context  | 
			 number of lines of context  | 
		
		
			|  skin  | 
			 the skin(s) to use to display the diff  | 
		
	
TODO: 
-  add a {word} render style
  -  move the common CGI param handling to one place
  -  move defaults somewhere