<s>
mpack	B-Application
and	O
munpack	B-Application
are	O
utilities	O
used	O
to	O
encode	O
and	O
decode	O
binaries	O
for	O
use	O
in	O
mail	O
messages	O
following	O
the	O
MIME	B-Protocol
standard	O
.	O
</s>
<s>
It	O
was	O
originally	O
written	O
by	O
John	O
Gardiner	O
Myers	O
of	O
Carnegie	O
Mellon	O
University	O
in	O
1993	O
,	O
and	O
has	O
been	O
ported	O
to	O
the	O
classic	B-Application
Mac	I-Application
OS	I-Application
and	O
Windows	B-Application
.	O
</s>
