…number? number? number? number?) (interpret-markup layout props #{ \markup { \with-dimensions #'(0 . 0) #'(0 . 0) \translate … …#2 #2 } e'1-\tweak layer #-1 -\markup {\Arrow #cyan #255 #14 #-1 #2 } e'1-\tweak layer #2 -\markup {\Arrow #red #172 #11 #1 #2 } % To have …