LATEX STYLE FILE FOR "WORKSHOPS IN COMPUTING" SERIES The style file on this disk is copyright (C) 1991 Springer-Verlag London Limited. It may be freely used for the production of papers intended for publication in the Springer "Workshops in Computing" series, and may be copied for this purpose. The file may not be used or copied for any other reason. We expect that authors will be able to suggest additions and improvements to this style file, and welcome any ideas. Please contact the Computing Editor or Associate Editor for Computing. Telephone (0) 81 947 5885 Fax (0) 81 947 4651 (UK, international dialling code 44)