Smartforms - FormInterface

Hi Experts,

In Smartforms FormInterface----

>import. why to import these parameters and whats the usage of these parameters?

Mail_sender type swotoobjid.

Output_options type ssfcompop.

User_settings type Tdbool.

jobpage type tdsfjpage.

S_RLDRH type RLDRH.

IS_NAST type NAST.

IS_REPEAT type IS_REPEAT.

CAN ANY ONE CAN EXPLAIN ABOUT THESE PARAMETERS,IAM WAITING FOR UR REPLY.

THANKS &REGARDS,

CHALAPATHI