Is there a way to have structure objects be self evaluating? I know CLtL says they're not, but it is an available extension in Lucid, and I've heard that the ANSI CL committee voted to incorporate this. I'm using release 3.1 on DEC3100. Jean-Francois Rit Tel: (415) 725 8813 CS Dept Robotics Laboratory e-mail: rit@cs.stanford.edu Cedar Hall Stanford, CA 94305-4110