I have made a little demonstration video that shows how you can use the drawcall minimzer. In this video I will be converting a KMZ file to a MDL file. In that process I am using the mass texture editor and the drawcall minimizer to make sure the textures end up as efficient as possible. In this case I could reduce the amount of drawcalls from 45 to 6. Enjoy the video and if you still have questions about the functionality please ask them on the forum (in the absense of a manual).