make cues configurable

default_style.ly

@@ -22,3 +22,13 @@ refStringWithNumbers = "Ref. ~a:"
 % hübsche Wiederholungszeichen für den Liedtext
 repStart = "𝄆"
 repStop = "𝄇"
+
+\paper {
+  cueMarkup = \markup {
+    \italic
+      #(make-on-the-fly-markup (lambda (layout props m)
+        (interpret-markup layout props 
+          (string-join (map (lambda (n) (format #f "~@r." n)) (chain-assoc-get 'cues props)) ", ")))
+        (make-null-markup))
+  }
+}