                        
                            %Assignment Operator%               
                                                
   Syntax      label%:=%&expression&

   Where       &expression& consists of labels and numbers and parenthesis.

   Purpose     Permits the combining of expressions, equations or relations.
               When relations are involved, only mathematically valid oper-
               ations are permitted.

   &Examples&

   þLABEL R[1..2]
   þR[1] : x < x + y < z
   þE : x
   þR[2]:=R[1] - E
   R[2] : 0 < y < -x + z

   PROCEDURE Assign(LABEL L,M) ;
     M := 2*L + 3 ;
   EXIT
