plans

from The Free On-line Dictionary of Computing (8 July 2008)

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).