Originally Posted by
Guitarrick
hold Ctrl and hit + for larger font, - for smaller
Just remember that to hit +, you also need to press the shift key.
So on a PC, CTRL-SHIFT-+ will enlarge the font, keep holding CTRL-SHIFT and tapping + will make it increasingly larger.
CTRL - (no shift) will make it smaller, holding CTRL and tapping - repeatedly will make it increasingly smaller.