[QUOTE=Jadon;664839]
D. The standard serif font used by default for body text comes in six sizes (xxs, xs, s, m, l, xl), as does the sans serif used for headers, though its sizes run bigger. See
Dale's EB-1150 page. I favor the largest serif font for the books I make; it runs sixteen lines per page (that's four lines per inch), plus changing header (in smallfont, without the separating line Librarian uses).
While you have a larger group of font sizes to choose from when creating the document (smaller for footnotes, regular for body, larger for subheaders, larger still for main headers, etc.), once it's on the machine, you can only increase the font one increment, that's it, and that assumes the IMP was made with the two font size changes in it. You can choose not to allow for the font change to make smaller files.
So it's important to make the fonts readable in the first place when you make your documents.