#include "paper-column.hh"
-#include "break-align-interface.hh"
-#include "moment.hh"
-#include "paper-score.hh"
-#include "warn.hh"
#include "axis-group-interface.hh"
-#include "spaceable-grob.hh"
-#include "text-interface.hh"
-#include "lookup.hh"
+#include "break-align-interface.hh"
#include "font-interface.hh"
-#include "output-def.hh"
-#include "pointer-group-interface.hh"
#include "grob-array.hh"
-#include "system.hh"
-#include "spring.hh"
#include "lookup.hh"
+#include "lookup.hh"
+#include "moment.hh"
+#include "output-def.hh"
+#include "paper-score.hh"
+#include "pointer-group-interface.hh"
#include "separation-item.hh"
+#include "skyline-pair.hh"
+#include "spaceable-grob.hh"
+#include "spring.hh"
#include "string-convert.hh"
+#include "system.hh"
+#include "text-interface.hh"
+#include "warn.hh"
Grob *
Paper_column::clone () const