The mmencode program is used by RexxMail to convert file attachments into
MIME-compliant base64-encoded text files. Below is the original doc text
included with mmencode.exe.
____________________________________________________________________________

The mmencode program simply converts a byte stream into (or out of) one
of the standard mail encoding formats defined by MIME, the standard for
internet multimedia mail formats. Such an encoding is necessary because
binary data cannot be sent through the mail. The encodings understood
by mimencode are preferable to the use of the uuencode/uudecode
programs, for use in mail, in several respects that were important to
the authors of MIME.

By default, mimencode reads standard input, and sends a "base64"
encoded version of the input to standard output.

The (really not necessary) "-b" option tells mimencode to use the
"base64" encoding.

The "-q" option tells mimencode to use the "quoted-printable" encoding
instead of base64.

The "-u" option tells mimencode to decode the standard input rather
than encode it.

The "-p" option tells mimencode to translate decoded CRLF sequences
into the local newline convention during decoding and to do the reverse
during encoding.  This option is only meaningful when  -b (base64
encoding) is in effect.

If a file name argument is given, input is read from that file rather
than from standard input.

The "-o" option, which must be followed by a file name, sends output to
the named file rather than to standard output.

Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)
Permission to use, copy, modify, and distribute this material for any
purpose and without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies, and
that the name of Bellcore not be used in advertising or publicity
pertaining to this material without the specific, prior written
permission of an authorized representative of Bellcore. BELLCORE MAKES
NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY OF THIS MATERIAL
FOR ANY PURPOSE. IT IS PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES.

Author: Nathaniel S. Borenstein
