.B \-visual \fIvisual\fP\fP
Specify which visual to use. Legal values are the name of a visual class,
or the id number (decimal or hex) of a specific visual.
+.TP 8
.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
+.TP 8
+.B \-delay \fImicroseconds\fP
+The delay specified by this option affects the speed of the animation (and the
+computation workload on the machine). You can use \fB\-delay 0\fP in
+conjunction with \fB\-fps\fP, and this can be an interesting benchmark of
your GL performance.
.SH ENVIRONMENT
.PP