Typed Racket

Sam Tobin-Hochstadt b207bb9c0f update docs to use `define-type' ... document `define-predicate' svn: r18498 original commit: 24b9078560d936d046fe14b3198432a3f64cbd1c		2010-03-10 00:17:33 +00:00
collects	update docs to use `define-type'	2010-03-10 00:17:33 +00:00