NFHS baseball rules changes

Not many changes by NFHS in the rules this year. Most of them appear to be clarifications. These are NFHS rules and do not include PIAA interpretations. Those will be forthcoming following interpreter meetings.
* Non-permanent lines (1.2.2): Added a line that requires non-permanent lines (chalked lines) to be white.
*Batter permitting pitched ball to touch him (7.3.4): Change clarifies that if a batter allows himself to be hit by a pitched ball, the pitch counts as a ball or strike. He remains at bat unless it is ball four or strike three.
* Umpire uniform requirements (10.1.9): The requirement that pants be "heather" gray has been changed to just gray. Over time pants may change to just gray and companies are selling different shades of gray.
EDITORIAL CHANGES
* Intentionally pitch at a batter (6.2.3): wording changed from throw to pitch.
*Live ball touches base coach (3.2.3): Accidentally was replaced with unintentionally. Ball remains alive in this case. If the coach interferes intentionally in foul or fair territory the ball is dead and the appropriate penalty applied.