\title{Good Guys} {\obeylines\parindent0pt\parskip0pt Angus Duggan Department of Computer Science University of Edinburgh, JCMB The King's Buildings, Mayfield Road Edinburgh EH9 3JZ, UK email: {\tt ajcd@uk.ac.ed.lfcs} \medskip\goodbreak Mike Spivak, \TeX plorators 3701 W Alabama Suite 450-273 Houston, TX 77027, USA email: {\tt spivak@math15.rice.edu} \medskip\goodbreak David Penfold Edgerton Publishing Services 20 Edgerton Road Edgerton Huddersfield HD3 3AD, UK 0484 519462 \medskip\goodbreak Betsy Dale ArborText Inc, Suite 300 535 W William St Ann Arbor, MI 48103, USA email: {\tt bjd@arbortext.com} \medskip\goodbreak David Rhead Cripps Computing Centre University Park Nottingham N57 2RD, UK email: {\tt d.rhead@uk.ac.nottingham.ccc.vme} \medskip\goodbreak Henry Holloway 11 Hillcrest Road South Woodham Ferrers Essex CM3 5NU, UK \medskip\goodbreak Peter Ashby \& Anna Duckworth BCS ITEXT British Computer Society PO Box 1454 Station Road Swindon SN1 1TG, UK\strut } \endinput