f4 available

Hi,

*data lv_fldcat type

*To avail the existing F4 help these are to

*be given in the field catalogue

lv_fldcat-f4availabl = 'X'.

lv_fldcat-ref_table = 'T582A'.

lv_fldcat-ref_field = 'ZEITB'.

In the above statements i want f4availabl is coming from which type-pools?

Regards