734:/lib/skill_raise.c (/lib/skill_raise.c)
(int) sk_filter_improve(int sk, int steps)
/*
 * Function name: sk_filter_improve
 * Description:   Filter out what skills this player can improve
 * Arguments:     sk    - The skill
 *                steps - The number of steps player wants to improve
 * Returns:       1 if play can improve skill
 */
