Caveat: The documentation describes a rather
old version of the GFXCTL class. When in doubt,
use the source.


In order to make the GFX extension work, add

libs = -ltermcap -lX11 -L/usr/X11R6/lib

to the libs variable of your $HOME/.txrc file.

If this file does not already exist, copy it
from

$T3XDIR/system.txrc

If you plan to install this class in the T3X
class hierarchy, above change should be applied
directly to

$T3XDIR/system.txrc

In this case, you should also copy the 'font.vf'
file to

$T3XDIR/lib/system.vf