User blog comment:PsiCubed2/CURRENT VALUE OF PEGG/@comment-27516045-20171103012553/@comment-80.98.179.160-20171124095920

Due to the logic: If you disable I and O for visual similarity with 1 and 0, the logic says Z is disabled, due to its visual similarity with 2. And then, if exists in your system, A and B due to their visual similarity with 4 and 8, but, as we saw, G wasn't, despite it looks like a 6. T looks like 7, S looks like 5, and D looks like 0, alike O. Q looks like 9, and no letter looks like 3.