sets the output mode (string). The mode parameter is handled differently
depending on the backend. On the X11 backend, it just sets the WIDTHxHEIGHT of
the weston window.
-The DRM backend accepts different modes:
-.PP
-.RS 10
-.nf
-.BR "WIDTHxHEIGHT " "Resolution size width and height in pixels"
-.BR "preferred " "Uses the preferred mode"
-.BR "current " "Uses the current crt controller mode"
-.BR "off " "Disables the output"
-.fi
-.RE
-.RS
-.PP
-Optionally, a user may specify a modeline, such as:
-.PP
-.nf
-.in +4n
-.nf
-173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
-.fi
-.in
-.PP
-It consists of the refresh rate in Hz, horizontal and vertical resolution,
-options for horizontal and vertical synchronisation. The program
-.B "cvt(1)"
-can provide suitable modeline string.
+The DRM backend accepts different modes, along with an option of a modeline string.
+
+See
+.B "weston-drm(7)"
+for examples of modes-formats supported by DRM backend.
.RE
.TP 7
.BI "transform=" normal