On Tue, 3 Dec 1991 16:25:09 EST "A. Harry Williams" <HARRY@MARIST> said: >Given the size of LSV$WHO, it is unlikely to break, unless Eric chages >the format of the SIGNUP FILE. SIGNUP FILE ought to be an indexed file. Sadly, CMS does not support indexed files, but it becomes more and more apparent that this is what LISTSERV needs. If I implement indexed files some day, this file will probably be one of the first to be converted. Arbitrary string searches (a la EXECIO LOCATE) would no longer be reasonably feasible in REXX: you would have to read the file sequentially and use POS() on each record. Key searches would of course be considerably faster. Then there is the privacy issue. A user might be in the SIGNUP FILE because he subscribed to a mailing list with the CONCEAL option. If you were to install /WHOIS in (say) Germany, you would be breaking a couple laws and could end up being sued. Eric