-stems, slurs, beams, etc. are private to each voice. Hence, engravers
-should be grouped. The engravers for note heads, stems, slurs, etc. go
-into a group called ``Voice context,'' while the engravers for key,
-accidental, bar, etc. go into a group called ``Staff context.'' In the
+stems, slurs, beams, etc., are private to each voice. Hence, engravers
+should be grouped. The engravers for note heads, stems, slurs, etc., go
+into a group called `Voice context,' while the engravers for key,
+accidental, bar, etc., go into a group called `Staff context.' In the