Plan 9 from Bell Labs’s /usr/web/sources/contrib/steve/root/sys/src/cmd/tex/web2c/tiedir/tie.cf2
@x line 1 changed line 2 changed line 3 inserted line line 4 @y final line 2 final line 3 changed line 4 @z @x changed line 7 line 8 @y final line 7 final line 8 @z
