I have a Rebel T3i and I can't set ISO to 100

[lindap]

I get a reading that says can't get ISO 100 because Highlight Tone Priority is enabled - Auto D+.  The only way I can access Highlight Tone Priority is with video setting, I change to disable, hit set then go back to ISO but it still gives me the same error message.  What else can I do?

[lindap]

I just answered my own question.  Page 79 of the manual, go into gear wrench 3, C.Fn, select 6 and 0 for disable.  Now I have ISO 100.