--- /dev/null
+\version "2.16.0"
+
+\header {
+ texidoc="
+Changing the header fields in a book or a bookpart shall not have any effect on the global default values.
+"
+}
+
+\markup \vspace #2
+\markup { \bold Note: expect only title. }
+\markup \vspace #2
+
+\header {
+ title = "Title correct (set at top level)"
+}
+\score {
+ \relative c' { c1 }
+}
+
+
+\book {
+ % This should NOT set a global subtitle for the first score above:
+ \header {
+ subtitle = "Subtitle (set at book level)"
+ }
+ \markup \vspace #2
+ \markup { \bold Note: expect title and subtitle. }
+ \markup \vspace #2
+ %% Do we have a title, and is the subtitle set?
+ \score {
+ \new Staff { c'1 }
+ }
+}