+\version "2.14.0"
+
+#(set-default-paper-size "a6")
+
+\book {
+
+ \header {
+ texidoc = "The stretchability property affects the amount that staves will
+move under extreme stretching, but it does not affect the default distance
+between staves."
+ }
+
+ <<
+ \new Staff { c'1 \pageBreak c'1 }
+ \new Staff \with {
+ \override VerticalAxisGroup
+ #'default-staff-staff-spacing #'stretchability = #50
+ } { c'1 c'1 }
+ \new Staff { c'1 c'1 }
+ >>
+}