资料来源 : Free On-Line Dictionary of Computing

Pascal Plus
     
         {Pascal} with extensions for {object-oriented}
        {multiprogramming} 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)