Why is there no "I" on the board

[mark5000]

This question has been asked many times. The best answer is as @AdamR said above—depending on font, it can look like i or 1 or l.

Missing 'I' Coordinate issue

There is no ‘I’ coordinates on the Go board for 19x19 and 9x9 It just goes G,H, and then J. No ‘I’. Is there something I’m missing here?

Stupid question: why the letters in the board exclude the i?

So, the first time I noticed this I thought of reporting it as a bug. And I almost did. I decided, however, to check other servers first to make sure it was only on OGS, then noticed other Go servers also skip the “i”. But then, recently, while watching a video of a Go match on youtube, I noticed the “i” on the board, which made it clear not ALL go servers skip it. I logged into Tygem, and it also has the “i”. So, a few servers do skip it and others don’t. What is the reason to not include the…

https://reddit.com/r/baduk/comments/4femom/why_does_board_notation_skip_the_letter_i/
https://reddit.com/r/baduk/comments/6g7lj6/why_do_most_digital_goban_coordinates_skip_the/
https://reddit.com/r/baduk/comments/dmmy7d/why_is_the_letter_i_not_used_to_label_coordinates/