Much of the "rest of the world" (e.g. gdb, md5sum) uses lower case. �Personally I find lower-case much easier to read because I find the lower-case letters visually more different from the digits than the upper case letters. �For these two reasons I prefer lower-case. � I haven't always been this way. �I used to prefer upper case because I think the upper case letters look neater, having the same height as the digits. �But now I prefer legibility over neatness.

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