From CCP4 wiki
Similarly, hardware stereo can be invoked (assuming you have the CRT, correct graphics card, emitter, etc) using the same menu item, by selecting "Hardware Stereo".
==== Zalman Stereo ====
The attributes for this monitor have been tested and [http://pymol.org/zalman/ described rather extensively by Warren DeLano] on the PyMOL site. Please read it for important details and suggested purchasing sources.
The [[coot zalman]] page describes specifically how to get this to work with coot on Mac OS X, but the instructions should be generalizable to linux and Windoze.