Zach Babayco asked,
| Is there a document around somewhere that explains what the various
| characters that Procmail recognizes do? I've been able to figure out
| what some of them do in the conditions part of a recipe, such as the
| [brackets] and using a | inside ()'s for an OR statement, but that's
| about it. For the action part, I can't do anything beyond sticking the
| message into the right folder. Would an explanation be on the man page
| for a later version of Procmail?
It should all be in the procmailrc(5) man page, even in version 2.92.