PasCal with extensions for objeCt-orientedmultiprogramming by Jim Welsh and D. Bustard of {Queens University, Belfast}, UK. PasCal Plus uses an "envelope" ConstruCt for both paCkages and Classes. ["PasCal Plus - Another Language for Modular Multiprogramming", J. Welsh et al, Soft PraC & Exp 9:947 (1979)]. ["Sequential Program StruCtures", J. Welsh et al, P-H 1984, ISBN 0-13806828-3]. (1997-12-09)
