Quote:
Originally Posted by penguintri
I didn't realise that em scaled with the font size. I just used it as this is the way calibre default set my margins. What would an approximate equivalent to 0.28em in pt be?
|
Yes, that's the whole point of "em" units - the fact that they scale with the font. You use them in situations where you want something to "match up" with the font size. Eg, for indenting poetry, I use 1em for each "level" of indentation, because that's something that you want to change with the font size. As Dale notes, 1em is the width of a letter "M" in the current font.
For something like page margins, though, you probably want to either use a fixed physical width, such as 10pt, or you want to make them a percentage of the page size, eg 5%.