Cfg question

I was curious why are there two cfg files in the player folder. Do you need both of them?

Also, is there place here where I can get explaintion of these.

=Params::T2AutoDetail 250
-Param::CollapseTransforms
+Error::AllowEmptySubtrees
+Error::AllowCrossedDetails
+Error::AllowUnusedMeshes
-Error::AllowOldSequences
-Error::RequireViconNode

I think this one tells what into include. In the third pass.
-Param::CollapseTransforms


Are there more? Thanks.