Yeah, I think astrology stuff is bs, but I won't put that opinion of mine in MAME source code. When it comes to preservation of these old handhelds, every little piece is a part of history. =)

The Zodiac manual also shows "i" as 2 segments(like the "1" digit). This YouTube video says otherwise: https://www.youtube.com/watch?v=-AEU7jXo-pY
Plus: the 12 leds wouldn't work properly in that case.