-Further note that if the
-.B \-type
-switch is used, and it is desirable to
-act on a message/external-body content, then the
-.B \-type
-switch must
-be used twice: once for message/external-body and once for the content
-externally referenced.
-.SS "Checking the Contents"
-The
-.B \-check
-switch tells
-.B mhlist
-to check each content for an
-integrity checksum. If a content has such a checksum (specified as a
-Content-MD5 header field), then
-.B mhlist
-will attempt to verify the
-integrity of the content.