Type: boolean
Default: yes
Controls whether Mutt will ask you to press a key after shell- escape, pipe-message, pipe-entry, print-message, and print-entry commands.
It is also used when viewing attachments with `` auto_view'', provided that the corresponding mailcap entry has a needsterminal flag, and the external program is interactive.
When set, Mutt will always ask for a key. When unset, Mutt will wait for a key only if the external command returned a non-zero status.