Perhaps a better solution is our (well Fred's but...) ``file descriptor'' driver (similar to /dev/stdin in Eighth Edition Unix). Just have your program read /dev/fd0; no special casing required. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 4251) UUCP: seismo!umcp-cs!chris CSNet: chris at umcp-cs ARPA: chris at maryland