Plan 9 from User Space's /usr/local/plan9/tmac/tmac.m 

'''\"	TMAC.M @(#)tmacs.src	1.7
.if n .so #9/tmac/mmn
.if t .so #9/tmac/mmt

Space Glenda

Copyright © 2005 Lucent Technologies, Russ Cox, MIT.
See license for details.