[Xpert]How to determine local vs. remote X connection?

[Dave Williss]

How do I determine if my X connection is local (on the same machine) or remote (on a different machine)?  I'd like to use the shared memory extension, but it would be pointless if the connection is not local.    -- Dave Williss ------ Meddle not in the affairs of dragons,    for you are crunchy and taste good with catsup