PROCEDURES

E   Call the procedure described on top of the stack and
    remove the descriptor.  A new descriptor describing the
    result is pushed onto the stack if the procedure is a
    function or a map.

p   Assign the next parameter, described on the top of the
    stack, to the procedure described next on the stack.
    The parameter descriptor is removed leaving the
    procedure descriptor.

    e.g.      @7@1p@2pE        R(X, Y)

Procedure Definition

    $12PROC,7,1,0  procedure descriptor
    {              start of parameters
    ...........    parameter descriptors
    }              end of parameters


       The parameter descriptors are copied into the
    Parameter Area; they are also removed from the
    Descriptor Area if this is a spec.

N.B. {} also define record formats.






























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