181:/lib/no_skill_decay.c (/lib/no_skill_decay.c)
(public int) nsd_hook_not_retrainable(int skill)
/*
 * Function name: nsd_hook_not_retrainable.
 * Description  : The player does not have the right to retrain that skill
 *                because it is know set for him.
 * Arguments    : int skill - the skill number.
 * Returns      : int 1 - should always return 1.
 */
