3 \header { texidoc = "If the 'whiteout property of a
4 grob is set to a number or #t, that part of all objects
5 in lower layers which falls under the extent of
6 the grob's whiteout area is whited out. Here the
7 TimeSignature whites out the Tie but not the StaffSymbol.
13 \override Staff.StaffSymbol.layer = #4
14 \once \override Tie.layer = #2
16 \once \override Staff.TimeSignature.whiteout = ##t
17 \once \override Staff.TimeSignature.layer = #3
24 \override Staff.StaffSymbol.layer = #4
25 \once \override Tie.layer = #2
27 \once \override Staff.TimeSignature.whiteout-style = #'outline
28 \once \override Staff.TimeSignature.whiteout = #3
29 \once \override Staff.TimeSignature.layer = #3