Bow lift/Breath mark placement

[Evan Driscoll]

Hi, I'm a newbie at Lilypond. How can I get a bow lift/breath mark 
placement above the staff, a la [1], instead of crossing the top line [2]?

(I also like the more pronounced comma look of [1], but that matters less.)

[1] http://www.music.vt.edu/musicdictionary/textb/images/Breathmark.jpg
[2] http://lilypond.org/doc/v2.12/Documentation/user/a1/lily-33a6af2e.png

Thanks,
Evan