Cheatsheet
letters... Letters available to anagram
=word word must be in result
>n words must contain at least n letters
<n words must contain at most n letters
' words with apostrophes are considered
n choose a word with exactly n letters
-n display at most n results (limit 1000)
? display candidate words, not whole phrases
Hit enter to get full (up to 1000) results
Source (web app and unix commandline program) on github