Has anyone been using the Envelope feature?  We are planing on useing Envelopes to control our product architecture.  I have been working with this for a few days to develope a design process but have run into a problem: How can you create an Envelope of an assembly?

I am trying to avoid creating an assembly made up of individual envelopes, which would be assembled into an assembly.

Any help would be great.

Thanks,

Peter