Hi Michael,

The functionality you have built into MoI is amazing.

The ability to attach arbitrary bits of user information is first rate.

And I like the idea of saving the "selection set" info in the 3DM file itself.

I gather the ID of an object is not like a GUID that is unique and unchanging.

Is it just the current index into a given set of things, subject to change as things are added/deleted?

Thanks much!

Frederick