Free Throw Violation?

[HawkeyeCubP]

I'm interpreting the semicircle line the same as all other lane lines during a free-throw - the vertical planes of the boundaries of which cannot be broken by "either foot" (9-1-7, 9-1-8, 9-1-9) of the player occupying the area.

The ommission of a comma in 9-1-7, however, in "...farther from the basket (no comma here) or the free-throw semi-circle line," would provide a case for interpreting the semicircle line farthest from the basket to be the line whose vertical plane cannot be broken by either foot. So I see both sides. I'm still inclined to feel that the intent of the rule is to contain the free throw shooter inside of the insides of the lines that form the semicircle. It seems inconsistent that the rules would allow for the breaking of that particular vertical boundary line when the breaking all others during free throws are violations.

So the task, essentially, is to define the "free throw semi-circle," as laid out in 9-1-1, "The try shall be attempted from within the free-throw semicircle and behind the free throw line."

Anyone?