Determines if this overlay type is part of Tiberium veins. If this flag is disabled on the vein overlay, the veins won't spread. Other features such as the ability to deal damage on passing units appear to be hardcoded.
For Animations
Animations use the unit palette instead of the animation palette. and remap the colors according to the player's color(discovered by Testid123).
Wow! that's wonderful, now you can use this tag. to play the animation in the tag DestroyAnim got it.