Hi Wayne - good to sww you're atill around. How are things going? Things are a bot tough in the university sector right now, but I#m on sabbatical for a year which sweetens things. Adrian Prof Adrian Johnstone, Compiler Group, Department of Computer Science, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, England. Email a.johnstone@rhul.ac.uk Tel:+44(0)1784 443425 Fax:+44(0)1784 439786