I've not been having any luck finding docs on this, and my searches here and on the wiki haven't helped. I do apologize if this is something already documented and I somehow overlooked it.
The answer to my previous question made me realize I can't find what values are accepted for "permissions" in commands such as mfg. I've surmised "r" is read, but my attempts at other commands have not been terribly successful. Any pointers? Am I missing something obvious?