Forum Moderators: phranque
Type the same line in, say, Arial.
Compare.
The Courier text has little doo-dads hanging off the ends of the letters. For instance, an "n" will have the little horizontal lines at the bottoms of the down-strokes. But the Arial text doesn't have these.
The doo-dads are "serifs". "Sans" means "without". Any text with the doo-dads is in a "serif" font; any text without the doo-dads is in a "sans serif" font.
Eliz.