Steve, Shawn, thanks for your quick responses.
Shawn - yes, that's what I'm already using ("MemberType"). While working on PS scripts, I try to build my own reference by copying the output into the good old Notepad. :-)
Unfortunately it seems that Microsoft releases its products before finishing writing the appropriate documentation. And when, finally, the documentation is ready, it seems to me that it is written by some overseas guys, who copy and paste content without knowing the product in depth...