In <11060017@hplsla.hp.com> billh@hplsla.hp.com (Bill Harris) writes: >It seems like this occurred in the mid 1970's. At IBM's lab in Winchester, funnily enough. -- --------------------------------------------------------------------- Nick Phillips 17,Tennyson Avenue, Hitchin, Herts. SG4 0PX - UK nwp90@ecs.soton.ac.uk ---------------------------------------------------------------------