-@code{balloonText}; the former is used like @code{\once \override} to
-attach text to any grob, and the latter is used like @code{\tweak},
-typically within chords, to attach text to an individual note.
+@code{balloonText}; the former is used like
+@w{@code{\once \override}} to attach text to any grob, and the
+latter is used like @code{\tweak}, typically within chords, to
+attach text to an individual note.