example BEWA
Server side for item:
<set name="is_stackable" val="true" />
Client etcitemgrp.dat:
2 6569 0 3 6 3 0 dropitems.drop_scroll_m00 dropitemstex.drop_scroll_t00 icon.etc_blessed_scrl_of_ench_wp_a_i04 0 120 18 0 0 1 1 ItemSound.itemdrop_scroll 2 0 0
this must set manualy for all enchants, LS, books ...