My suggestion is to add on vtable.tbl comment like void set_integer_native(INTVAL value) # example: set P0, I0 void set_number_native(FLOATVAL value) # example: set P0, N0 and so on. Of course the content of the comment can be more descritive. Then, I changed parse_vtable and genclass.pl to create comments with this just before each pmclass method. I send the patch in attatchment. Alberto -- Alberto Manuel B. Simoes Departamento de Informática - Universidade do Minho http://alfarrabio.di.uminho.pt/~albie - http://numexp.sf.net