Re ``bring your reference books''---why? Shouldn't you be required to remember stuff without any aids other than on-line storage? :-) -- In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690 UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris at umcp-cs ARPA: chris at maryland