ETC had produced the first in what, hopefully, a series of videos explaining lighting control. They are calling it Bobblehead Fred Productions. The first one explains the difference between Tracking and Preset, HTP and LTP, and Move Fade and State in lighting control.
ETC's Mark Vassallo and BH-Fred discuss control.. it's entertaining and educational!
To watch it click the link below!
http://www.etcconnect.com/video/BHF-WhyDidMyConsoleDoThat/index.htm