texidoc = "Some composers use slurs both above and below chords.
This can be typeset by setting @code{doubleSlurs}"
}
-\version "2.7.13"
+\version "2.12.0"
-\layout { raggedright = ##t }
+\layout { ragged-right = ##t }
\relative {
\set doubleSlurs = ##t
<c e>4 ( <d f> <c e> <d f> )