I just downloaded the latest version of Komodo Edit (I needed to edit some PHP code) and it has an interesting feature that might be useful in DrRacket. In DrRacket if you hover the mouse pointer over a variable you get arrows from the binding occurance of a variable to its bound occurances which is very useful but if you move the cursor off the variable then the arrows disappear. In the latest version of Komodo if you click on a variable then all occurances of that variable are highlighted. It might be a useful enhancement in DrRacket, that if you clicked on the binding occurance of a variable then it and all its bound occurances would be hightlighted until you again clicked them off or clicked on a the binding occurance of a new variable. Or alternatively and probably better if clicking made the arrows stay until you clicked them off. Harry Spier