The DefaultPrinter function returns a Printer module that may be used to encode the instructions necessary to translate CodeGeneration's Intermediate Code structure.

moddef := 'module()
   export Printer, PrintTarget;
        Printer := LanguageDefinition[DefaultPrinter]();
        PrintTarget := proc() Printer:-PrintTarget(args); end proc:
        Printer:-AddFunction("cos", [numeric]::numeric, "MyCosine");
        Printer:-AddOperator(Names:-Assignment = "assigned to");
        Printer:-AddOperator(Names:-Addition   = "plus");
end module':

x assigned to y plus 3;