It is built in to scenefixer for one program

http://snarlygribbly.org/3d/forum/viewforum.php?f=8&sid=4c55caa2b27fdc225d757b2900438873

 

Also built into poser

System is busy right now but there is a wacro for it

EDIT to add: also scripts->changegamma

Bill

People that know everything by definition can not learn anything