Not perfectly safe, but safer than (eval (read))
It aims to make evaluation of limited subsets of user code safer.
The brave of heart can use a gzipped tarball or the darcs repository. Those wanting stability will have to wait. :P
Documentation? You want documentation? Do I look like Edi to you?
Essentially, "use however, no fair suing". So consider it BSD/MIT, I guess.
My e-mail address is email@example.com.