454:/std/weapon.c (/std/weapon.c)
(void) set_pen(int class)
/*
 * Function name: set_pen
 * Description  : Set penetration value of the weapon. This relates to how
 *                badly it hurts when you are hit by this weapon.
 *                When the lock has been set, no changes are allowed anymore.
 * Arguments    : int class - the pen value.
 */
