-----------
The following verbs can be used to manipulate writable mail recipients/players:
:rm_message_seq (message sequence)
Does an @rmmail. Messages in message sequence are removed from this
recipient's saved .messages and written to .messages_going.
:undo_rmm ()
Does an @unrmm. Messages in .messages_going are copied back to .messages.
:expunge_rmm ()
Does an @unrmm expunge. Blows away .messages_going.
:renumber ()
Does a @renumber.