+.TP 8
+.B \-front
+When spinning, never spin all the way around or upside down:
+always face mostly forward so that the text is easily readable.
+.TP 8
+.B \-no\-front
+Allow spins to go all the way around or upside down. This is the default.
+.TP 8
+.B \-wireframe
+Render in wireframe instead of solid.
+.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
+your GL performance.