Step on Line -- Legal or Illegal?

[BillyMac]

Originally Posted by Jurassic Referee

NFHS rule 9-1-7.

Jurassic Referee: Thanks. I couldn't find 9-1-7, but while looking for it, I came up with this:

9-1-3-e: The free thrower shall not have either foot beyond the vertical plane of the edge of the free-throw line which is farther from the basket or the freethrow semicircle line.

The free thrower shall not have either foot beyond the vertical plane of the edge the freethrow semicircle line. Which edge? I've always treated it like a boundary line, the "inner" edge being "out". Nevaderef, I believe, says to use the "outer" edge in regard to this rule.

Which edge? And again, this is only for theoretical purposes.