-# Legal keywords are
-# poll -- must be followed by a mailserver name
-# skip -- must be followed by a mailserver name
-# protocol (or proto) -- must be followed by a protocol ID
-# port -- must be followed by a TCP/IP port number
-# authenticate (or auth) -- must be followed by an authentication type
-# timeout -- must be followed by a numeric timeout value
-#
-# username (or user) -- must be followed by a name
-# is -- must be followed by one or more names
-# remotefolder (or remote) -- must be followed by a filename
-# password (or pass) -- must be followed by a password string
-# smtphost (or smtp) -- must be followed by a host name
-# mda -- must be followed by an MDA command string
-# keep
-# flush
-# fetchall
-# rewrite
-# nokeep
-# noflush
-# nofetchall
-# norewrite
-#
-# Legal protocol identifiers are
-# pop2 (or POP2)
-# pop3 (or POP3)
-# imap (or IMAP)
-# apop (or APOP)
-# kpop (or KPOP)
-#
-# Legal authentication types are
-# login
-# kerberos
-#
-# Legal global option statements are
-#
-# set batchlimit = -- must be followed by a number
-#
-# The noise keywords `and', `with', `has', `wants', and `options' are ignored
-# anywhere in an entry; they can be used to make it resemble English. The
-# punctuation charactes `,' `:' `;' are also ignored.
-#