+.TP 8
+.B --map-to-crtc \fIdevice\fP \fIcrtc\fP
+Restricts the movements of the absolute \fIdevice\fP to the RandR
+\fIcrtc\fP. The CRTC name must match a currently connected CRTC (see
+\fIxrandr(__appmansuffix__)\fP). If the NVIDIA binary driver is
+detected or RandR 1.2 or later is not available, a Xinerama output may be
+specified as "HEAD-N", with N being the Xinerama screen number. This option
+has no effect on relative devices.
+.PP