DTS Prefix Tags for Maya

Is there a reference guide for all the prefix tags you can attach to your models in Maya? The only ones I know about are "BB_" and "SORT_". I've been trying to find one that will make a billboard object that holds the mesh on the z-axis, but it would also be handy to know what else I can do with this exporter. There doesn't seem to be a list of available prefixes anywhere.