3 texidoc = "With balloon texts, objects in the output can be marked,
4 with lines and explanatory text added."
13 \once\override Stem #'print-function = #Balloon_interface::print
14 \once\override Stem #'balloon-original-callback = #Stem::print
15 \once\override Stem #'balloon-text = #"I'm a stem"
16 \once\override Stem #'balloon-text-offset = #'(3 . 4)
17 \once\override Stem #'balloon-text-props
18 = #'((font-family . roman))
21 %% use predefd function.
22 \context Voice \applyoutput #(add-balloon-text
23 'NoteHead "heads, or tails?"
30 \layout{ raggedright = ##t }