Manual control of the volte, including a @code{|:} bar line at the
beginning and explicit volta numbers:
-@lilypond[verbatim,quote,relative=2]
@c FIXME: I can't believe this is right.
@c TODO: I think it is. I plan
@c to delete this example, since it's
@c already been given at L238. rp
+@lilypond[verbatim,quote,relative=2]
s1*1/10
\set Score.repeatCommands = #'( start-repeat )
c1*9/10