Special characters, symbols or glyphs are especially good to save typing, and they look a lot nicer than plain text.
To use them, simply go to Edit –> Special Characters. Another way is to go to your System Preferences, then International –> Input Menu, and click on Character Palette. Make sure that you have the “Show input menu in menu bar” check box selected on, at this point you’ll see a new icon in your menu bar, it will either be the Character Palette icon or most likely the US flag (or any other keyboard layout). Click on that and you’ll see “Show Character Palette”, select that and it will pop up allowing you to pick whatever glyph you want and then simply click “Insert”.

