If you don't need it do it in realtime, you can just open the patch as text and do a find for every instance of the words "send" and "receive". With some creative regular expressioning, you could get the names as a list, or you can just do it manually.

If you need to do it from Max, you'll need to find (or write) an external object which lets you get the text of an object's box. I don't believe there's anything which does this at this time.

jb

was this issue addressed in max 5?

it would nicely compliment the "List Externals and Subpatchers" function and aid documentation for collaboration.