Quote:
Originally Posted by JSWolf
I like the way Sony does it on the T1. You have a default font size. You can keep that as the default font size or you can change the default font size. You can also just as easy set it back to the original default font.
If I set the font size in CSS to be 1em, will it be 1em when the ePub is opened regardless of what it was set to for the previous eBook? If not, that IS a bug.
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1 em is
NOT a physical font size. It was originally the size of a capital M in a font (or a quad-em as the block was a square). The physical size of the em depended on the point size of the font -- a 144 point capital M is 1 em, a 6 point capital M is 1 em. It has now come to mean the point size of the font since many fonts do not have a capital M in them.
In the sense it is used in an epub book, web browser, etc., 1 em means the system font size whatever that may be. If I set the display font on my system to 72 point, that's what a 1 em will mean. If I set the display font to 4 point, that's what 1 em will mean.
Saying your default font size is 1 em is a meaningless noise. Much like saying that yesterday was 3 metres wide or giving a direction such as turn east at next Tuesday.
And yes, I do have an em ruler from the days when I got to type on ETAION SHRDLU keyboards and leading meant real lead -- well, type metal.
Perhaps this discussion would be better in a different thread? Typography and style sheets for geeks anyone?
Regards,
David