Detecting if run from a frame buffer console

[romildo@xxxxxxxxxxx]

Hello.

Is it possible to determine whether mutt is being run
from a frame buffer console?

I need this in order to add the mailcap entry:

text/html;  links -g -driver fb %s; nametemplate=%s.html; 
test=$HOME/.mutt/RunningFB

which only makes sense when mutt is running in a
frame buffer console. The idea is that the
script RunningFB should succeed only in this case.

Any help?

Romildo