ModEnc is currently in Maintenance Mode: Changes could occur at any given moment, without advance warning.
PreProductionAnim
PreProductionAnims are animations that are supposed to play once prior to the productionanims. In RA2, preproductionanims are entirely unused and most of their functionality has been lost.
A test on conyards, airpads, barracks, war factories, repair depots, and refineries shows that the only known function of PreProductionAnim in RA2 is that it fires an animation every time a harvester docks with the refinery, without the function of locking the harvester into the refinery until the animation stops, unlike ProductionAnim.