[racket] thanks for online check syntax in drracket

The online Check Syntax in DrRacket quite nice for rapidly and safely 
renaming multiple bindings.  Thanks for all the work that must have gone 
into this.

(I've been using online Check Syntax for a while, but renaming more than 
one binding rapidly, like I did just now, without having to keep hitting 
the Check Syntax button and waiting, is the biggest win for me.)

-- 
http://www.neilvandyke.org/