dft_scan_insert_mode                               Determines whether Test
                                                   Synthesizer implements
                                                   scan chains with scan
                                                   cell substitution or a
                                                   buried scan technique.
 [ tree ]                                            Applies the constraint to
                                                     all levels of hierarchy
                                                     below the object(s)
                                                     specified.
 [ -scope ]                 scope                    module / current scope
 mode                                                auto, scan_cell/ auto
