资料来源 : Free On-Line Dictionary of Computing

PLANS
     
        Programming Language for Allocation and Network Scheduling.  A
        PL/I preprocessor, used for developing scheduling algorithms.
        "A User's Guide to the Programming Language for Allocation and
        Network Scheduling", H.R.  Ramsey et al, TR SAI-77-068-DEN,
        Science Applications Inc (Jun 1977).