While looking at (ice-9 r5rs), (ice-9 safe-r5rs) and (ice-9 null), I've noticed, that there are a few undocumented procedures used there, like "make-module" or "set-module-kind!". In the thread http://lists.gnu.org/archive/html/guile-user/2009-02/msg00000.html there is another one mentioned, named "beautify-user-module!". Using the readline's completion feature, I also noticed that there are procedures "module-obarray", "module-observe", "make-modules-in" and some others that are lacking an entry in the manual.
Are there any deeper reasons behind their absence, or is it just an oversight?
