4 A second top-level header block shall not entirely replace a first header block, but only changed variables.
6 piece = "Piece correct (set at top level)"
7 title = "Title incorrect (to be superseded at top level)"
10 % This should NOT overwrite the piece from above!
11 title = "Title correct (superseded at top level)"
14 \markup { \bold Note: expect title and piece. }