Enlighten me on this, as to
when am I using this------
FORM user_command USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield.
and when am I using this------
FORM set_pf_status USING rt_extab TYPE slis_t_extab.
SET PF-STATUS 'ZNEWSTATUS'.
My question is .. in what situation am I using the former and the later..
Thanking you all in advance,