Known Limitations

Dimmer has only been tested under NeXTSTEP 2.0, 2.1, and 2.2.  I don't think it will work under 1.0 and I don't know about 3.0.

Dimmer will blank the screen on a single headed machine.  There is no support for multi-headed machines because I didn't want to add features that I wouldn't be able to test myself.  If there is enough demand, I would add it and rely on others to test it.

When using CMD-d to dim the screen, be aware that key releases are events too and  will cause Dimmer to undim the screen, along with key presses and mouse movements.  If you slowly type CMD-d and then release the CMD key after the screen is dim, it will undim immediately.