OP_RECALL_MESSAGE "recall a postponed message"
OP_REDRAW "clear and redraw the screen"
OP_REFORMAT_WINCH "{internal}"
+OP_RENAME_MAILBOX "rename the current mailbox (IMAP only)"
OP_REPLY "reply to a message"
OP_RESEND "use the current message as a template for a new one"
OP_SAVE "save message/attachment to a file"