| Feature | Default Setting | Function to change |
| Active video attribute | LFLDACT | sf_att() |
| Begin-field function | NULLFP | sf_begfp() |
| End-field function | NULLFP | sf_endfp() |
| Help | NULLP | sf_help() |
| Inactive video attribute | LFLDINACT | sf_att() |
| Message string | NULLP | sf_msg() |
| Name | NULLP | i_namset() |
| Options | None | sf_opt() |
| Skip video attribute | LSKIP | sf_att() |
| User pointer | NULLP | userp_set() |
| Validation function | NULLFP | sf_valfp() |
