Sorry, the Index line slipped by me in my previous posting. It is, of course: Index: /usr/src/bin/expr.y -- Amos Shapir National Semiconductor (Israel) 6 Maskit st. P.O.B. 3007, Herzlia 46104, Israel (011-972) 52-522261 amos%nsta at nsc.com 34.48'E 32.10'N