-.B \-fps
-Display a running tally of how many frames per second are being rendered.
-In conjunction with \fB\-delay 0\fP, this can be a useful benchmark of
-your GL performance.
+.B \-program \fIcommand\fP
+The given program is run, and its output is displayed.
+If specified, this overrides \fI\-text\fP.
+The output of this program will be repeatedely displayed, with new
+pages of text shifting in every few seconds. Lines should be relatively
+short. You might try:
+.EX
+-program 'xscreensaver-text --cols 20'
+.EE