theorem Th44:
  UsedI*Loc Macro i = UsedInt*Loc i
proof
  rng Macro i = {i, halt SCM+FSA} by COMPOS_1:67;
 hence UsedI*Loc Macro i
   = union { UsedInt*Loc j : j in {i, halt SCM+FSA}}
  .= UsedInt*Loc i \/ UsedInt*Loc halt SCM+FSA from SUBSET_1:sch 6
  .= UsedInt*Loc i \/ {} by Th32
  .= UsedInt*Loc i;
end;
