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- Anonymous1 decade agoFavorite Answer
In printing, the size of a letter is important. There is em length which is that of a dash and en which is the length of a hyphen. For example, w is em length and i is en length.
- 1 decade ago
It's a dash that is the width of the letter n. I forget which typface. It's one of those measurement leftover from the good ole days when type was set by hand. There are little spacers that are the same width as certain letters.