42:/lib/shop.c (/lib/shop.c)
(int) shop_hook_allow_sell(object ob)
/*
 * Function name: shop_hook_allow_sell
 * Description:	  If you want to do more testing on objects the player intend
 *		  to sell.
 * Argument:	  ob - The object player wants to sell
 * Returns:	  1 if we allow player to sell the object (default)
 */
