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4.3.2 Page breaking
The default page breaking may be overridden by inserting
\pageBreak
or \noPageBreak
commands. These commands are
analogous to \break
and \noBreak
. They should be
inserted at a bar line. These commands force and forbid a page-break
from happening. Of course, the \pageBreak
command also forces
a line break.
The \pageBreak
and \noPageBreak
commands may also be
inserted at top-level, between scores and top-level markups.
There are also analogous settings to ragged-right
and
ragged-last
which have the same effect on vertical spacing.
If ragged-bottom
is set to #t
the systems will not
be justified vertically. When ragged-last-bottom
is set
to #t
, as it is by default, empty space is allowed at the
bottom of the final page (or the final page in each
\bookpart
). See
Fixed vertical spacing \paper
variables.
Page breaks are computed by the page-breaking
function. LilyPond
provides three algorithms for computing page breaks,
ly:optimal-breaking
, ly:page-turn-breaking
and
ly:minimal-breaking
. The default is ly:optimal-breaking
,
but the value can be changed in the \paper
block:
\paper { page-breaking = #ly:page-turn-breaking }
When a book has many scores and pages, the page breaking problem may be
difficult to solve, requiring large processing time and memory. To ease
the page breaking process, \bookpart
blocks are used to divide
the book into several parts: the page breaking occurs separately on each
part. Different page breaking functions may also be used in different
book parts.
\bookpart { \header { subtitle = "Preface" } \paper { %% In a part consisting mostly of text, %% ly:minimal-breaking may be preferred page-breaking = #ly:minimal-breaking } \markup { … } … } \bookpart { %% In this part, consisting of music, the default optimal %% page breaking function is used. \header { subtitle = "First movement" } \score { … } … }
Predefined commands
See also
Notation Reference:
\paper
variables for page breaking.
Snippets: Spacing.
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