Prima facie, if you were told "numbers in the range 0-10", would you really think, "ah, they really mean 0 through 9"?
I would indeed default to both endpoints of the range being inclusive. I also begin counting at one, not zero. I’ve long gotten past being surprised when computer science and my defaults don’t agree. Choices are made and documented and that works for me.
As for this, documentation I never really gave the wording a second thought before, though I can definitely understand the complaint and like the somewhat wordier, but less linguistically challenging, phrasing the OP suggested (Boundary point, especially by itself, is not an improvement).
David J.
