Get "Item category Text " using Function Module "READ_TEXT"

Hi,

I have an internal table "t_lips" for LIPS with fields POSNR, MATNR, PSTYV. I need to display the "ITEM CATEGORY TEXT" at the end of group of same items.

please let me know the Syntax of "READ_TEXT" and what all parameters we should input into the TEXT for getting ITEM CATEGORY TEXT of materails inside delivery.

Regards

Avi...