SubD treatment with RhinoScripts?

hi Michael, thanks, good to know.
My questions is specifically for existing RhinoScript (VBscript) methods set. It was prompted by the script I was trying that specifically allows only Surfaces and Polysurfaces to be selected and it allowed SubD objects (but not Mesh objects), but failed later on. That’s why I am trying to figure out what the strategy is and possibly plan in advance for my published plugins and our in-house toolset to cooperate.

–jarek