Tech Source Raptor OpenWindows for Solaris - Manual (Page 64)

Raptor OpenWindows for Solaris Installation & Reference Manual
D-2
Alternately, an exact region of the screen can be captured by
specifying the region's geometry using the geometry option.
The "x" and "y" specify the upper left-hand corner of the region,
which, along with "width" and "height", describe the rectangular
area to be captured.
However chosen, the captured image is saved as a PNG file by
default. PNGs provide lossless compression, 24-bit color, and
may be viewed with a variety of common imaging applications. If
PNG is not prefered, then either BMP or PPM can be selected
instead by including either of the switches "-bmp" or "-ppm".
The "-dev" option specifies the graphics device, but is not
needed with most versions of the software. If it is needed,
simply provide the path to the graphics device with this option.