Attached Link: http://www.bergen.org/AAST/Projects/3DSMaxTutorial/modifiers.html

A modifier stack keeps track of all the changes you make to an object so you can go back and alter a change you made before or remove it without losing everything you've done afterwords (that is, you don't have to hit undo to get back to a change that turned out not to work, you can just go back to that point in the modifier stack and change that one thing). Each object has its own modifier stack, so effectively you can make changes to one object, then another, then go back and undo the changes to the first one without affecting the second. It's explained a little more clearly at the link. BTW, it's also called an operator stack.

Message edited on: 05/08/2005 13:09