Pine uses subprocesses to perform several of its tasks. As such,
    users without subprocess quota cannot do any of the following:

    o  use a customized printing command,

    o  view image or video attachments,

    o  use the spell checker, or

    o  use an alternate editor.

    A side effect of using subprocesses in Pine when you have a
    remote IMAP connection is that the connection might timeout while
    waiting for a subprocess to complete. This is especially likely
    when using an alternate editor to compose a message.