This is a map designed to show the power of the Texture Select By ID actor message. Upon starting the map, you can apply different diffuse, emissive or specular textures to various unit models on the fly. The map applies these textures to all units and shows the pathes of the currently used textures.
This is most helpful, if you want to apply alternative textures to your units without importing textures made specifically for those units, because testing valid combinations can take a huge amount of time otherwise.
Unfortunately, the textures and models need to be specifically set up, so the selection is limited. I will add more over time; also you may request additional models and textures.