Doc-es: Texidoc LSR Snippets in Expressive.

[lilypond.git] / Documentation / user / text.itely

@c -*- coding: utf-8; mode: texinfo; -*-
@ignore
    Translation of GIT committish: FILL-IN-HEAD-COMMITTISH

    When revising a translation, copy the HEAD committish of the
    version that you are working on.  See TRANSLATION for details.
@end ignore

@c \version "2.11.57"

@node Text
@section Text

@lilypondfile[quote]{text-headword.ly}

This section explains how to include text (with various
formatting) in music scores.

@noindent
Some text elements that are not dealt with here are discussed in other
specific sections: @ref{Vocal music}, @ref{Titles and headers}.


@cindex Text, other languages
@warning{To write accented and special text (such as characters
from other languages), simply insert the characters directly into
the LilyPond file.  The file must be saved as UTF-8.  For more
information, see @ref{Text encoding}.}

@menu
* Writing text::                
* Formatting text::             
* Fonts::                       
@end menu


@node Writing text
@subsection Writing text

This section introduces different ways of adding text to a score.

@menu
* Text scripts::                
* Text spanners::               
* Text marks::                  
* Separate text::               
@end menu


@node Text scripts
@subsubsection Text scripts

@cindex Text scripts
@cindex text items, non-empty
@cindex non-empty texts
@cindex quoted text

Simple @q{quoted text} indications may be added
to a score, as demonstrated in the following example.
Such indications can be manually placed
above or below the staff, using the
syntax described in @ref{Direction and
placement}.

@lilypond[quote,fragment,ragged-right,verbatim,relative=1]
d8^"pizz." e f g a4-"scherz." f
@end lilypond

This syntax is actually a shorthand; more complex text
formatting may be added to a note by explicitly using a
@code{\markup} block, as described in @ref{Formatting text}.

@lilypond[quote,fragment,ragged-right,verbatim,relative=1]
d8^\markup { \italic pizz. } e f g 
a4_\markup { \tiny scherz. \bold molto } f
@end lilypond

By default, text indications do not influence the note spacing.
However, their widths can be taken into account:
in the following example, the first text string does not affect 
spacing, whereas the second one does.

@lilypond[quote,fragment,ragged-right,verbatim,relative=1]
d8^"pizz." e f g
\textLengthOn
a4_"scherzando" f
@end lilypond

@predefined

@funindex \textLengthOn
@code{\textLengthOn},
@funindex \textLengthOff
@code{\textLengthOff}


@seealso

Notation Reference: @ref{Formatting text},
@ref{Direction and placement}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextScript}.

@knownissues

Checking to make sure that text scripts and lyrics are within the
margins is a relatively large computational task.  To speed up
processing, LilyPond does not perform such calculations by
default; to enable it, use

@example
\override Score.PaperColumn #'keep-inside-line = ##t
@end example


@node Text spanners
@subsubsection Text spanners

@cindex Text spanners

Some performance indications, e.g., @notation{rallentando} or
@notation{accelerando}, are written as text and are extended over
multiple notes with dotted lines.
Such objects, called @q{spanners}, may be created
from one note to another using the following syntax:

@lilypond[verbatim,quote,ragged-right,fragment,relative=2]
\override TextSpanner #'bound-details #'left #'text = "rit." 
b1\startTextSpan 
e,\stopTextSpan
@end lilypond

@noindent
The string to be printed is set through
object properties.  By default it is printed in italic characters,
but different formatting can be obtained using
@code{\markup} blocks, as described in @ref{Formatting text}.

@lilypond[quote,ragged-right,fragment,relative=2,verbatim]
\override TextSpanner #'bound-details #'left #'text =
  \markup { \upright "rit." } 
b1\startTextSpan c
e,\stopTextSpan
@end lilypond

The line style, as well as the text string, can be defined as an
object property.  This syntax is described in @ref{Line styles}.

@predefined

@funindex textSpannerUp
@code{\textSpannerUp},
@funindex textSpannerDown
@code{\textSpannerDown},
@funindex textSpannerNeutral
@code{\textSpannerNeutral}

@seealso

Notation Reference: @ref{Line styles}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextSpanner}.


@node Text marks
@subsubsection Text marks

@cindex coda on bar line
@cindex segno on bar line
@cindex fermata on bar line
@cindex bar lines, symbols on
@funindex \mark

Various text elements may be added to a score using
the syntax described in @ref{Rehearsal marks}:

@c \mark needs to be placed on a separate line (it's not
@c attached to an object like \markup is). -vv

@lilypond[verbatim,quote,ragged-right,fragment,relative=2]
c4
\mark "Allegro"
c c c
@end lilypond

This syntax makes it possible to put any text on a bar line;
more complex text formatting may be added using a @code{\markup}
block, as described in @ref{Formatting text}.  This can be used to print
signs like coda, segno or fermata, by specifying the appropriate
symbol name:

@lilypond[fragment,quote,ragged-right,verbatim,relative=2]
c1
\mark \markup { \musicglyph #"scripts.ufermata" }
c1
@end lilypond

@noindent
Such objects are only typeset above the top staff of the score; depending on
whether they are specified at the end or the middle of a bar, they 
can be placed above the bar line or between notes.  When specified at the
beginning of a score or at a line break, marks will be printed at
the beginning of the line (the next line, in case of a line break).

@lilypond[fragment,quote,ragged-right,verbatim,relative=2]
\mark "Allegro"
c1 c
\mark "assai" \break
c  c
@end lilypond


@snippets

@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{printing-marks-at-the-end-of-a-line-or-a-score.ly}

@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{aligning-marks-with-various-notation-objects.ly}

@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{printing-marks-on-every-staff.ly}

@seealso

Notation Reference: @ref{Rehearsal marks},
@ref{Formatting text}, @ref{The Feta font}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{RehearsalMark}.

@knownissues
@c  To be removed when Issue 69 in the tracker gets fixed. -vv

If a mark is entered at the end of the last bar of the score (where
there is no next line), then the mark will not be printed at
all.

@node Separate text
@subsubsection Separate text

@cindex separate text
@cindex standalone text
@cindex top-level text
@cindex text, standalone
@funindex \markup

A @code{\markup} block can exist by itself, outside of any
any @code{\score} block, as a @qq{top-level
expression}.  This syntax is described in @ref{File structure}.

@lilypond[verbatim,quote]
\markup {
  Tomorrow, and tomorrow, and tomorrow...
}
@end lilypond

@noindent
This allows printing text separately
from the music, which is particularly 
useful when the input file contains
several music pieces, as described in
@ref{Multiple scores in a book}.

@lilypond[quote,ragged-right,verbatim]
\score {
  c'1
}
\markup {
  Tomorrow, and tomorrow, and tomorrow...
}
\score {
  c'1
}
@end lilypond

Using a specific syntax, text blocks can be spread
over multiple pages, making possible to print
text documents or books (and therefore to
use LilyPond as a word processor).  This syntax is described in
@ref{Multi-page markup}.

@predefined

@code{\markup},
@funindex \markuplines
@code{\markuplines}

@ignore
@snippets

TODO: add convenient snippets in input/new -vv
@end ignore

@seealso

Notation Reference: @ref{Formatting text},
@ref{File structure}, 
@ref{Multiple scores in a book},
@ref{Multi-page markup}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextScript}.


@node Formatting text
@subsection Formatting text

This section presents basic and advanced text formatting,
using the @code{\markup} mode specific syntax.

@menu
* Text markup introduction::    
* Selecting font and font size::      
* Text alignment::              
* Graphic notation inside markup::  
* Music notation inside markup::  
* Multi-page markup::          
@end menu

@node Text markup introduction
@subsubsection Text markup introduction

@cindex markup
@cindex text markup
@cindex markup text
@cindex typeset text
@funindex \markup

A @code{\markup} block is used to typeset text with an extensible
specific syntax called @qq{markup mode}.

@cindex markup expressions
@cindex markup syntax

The markup syntax is similar to LilyPond's usual syntax: a
@code{\markup} expression is enclosed in curly braces @code{@{
@dots{} @}}.  A single word is regarded as a minimal expression,
and therefore does not need to be enclosed with braces.

Unlike simple @q{quoted text} indications, @code{\markup} blocks
may contain nested expressions or specific commands,
entered using the backslash @code{\} character.
Such commands only affect the first following expression.

@lilypond[quote,verbatim,fragment,relative=1]
e1-\markup intenso
a2^\markup { poco \italic più forte  }
c e1
d2_\markup { \italic "string. assai" }
e 
b1^\markup { \bold { molto \italic  agitato } }
c
@end lilypond

@cindex special characters in markup mode
@cindex markup mode, special characters
@cindex reserved characters, printing
@cindex printing special characters
@cindex quoted text in markup mode

A @code{\markup} block may also contain quoted text strings.
Such strings are treated as minimal text expressions, and
therefore any markup command or special character (such as
@code{\} and @code{#}) will be printed verbatim without affecting
the formatting of the text.  This syntax even allows to print
double quotation marks, by preceding them with backslashes

@lilypond[quote,verbatim,fragment,relative=1]
d1^"\italic markup..."
d_\markup \italic "... prints \"italic\" letters!"
d d
@end lilypond

The way markup expressions are defined affects 
how these expressions will be stacked, centered and aligned
when using the commands explained in @ref{Text alignment}.

@lilypond[quote,verbatim,fragment,relative=1]
c1^\markup { \column { a bbbb \line { c d } } }
c1^\markup { \center-column { a bbbb c } }
c1^\markup { \line { a b c } }
@end lilypond

Lists of words that are not enclosed with double quotes
or preceded by a command are not treated as a distinct
expression.  In the following example, the first two
@code{\markup} expressions are equivalent:

@lilypond[quote,verbatim,fragment,relative=1]
c1^\markup { \center-column { a bbb c } }
c1^\markup { \center-column { a { bbb c } } }
c1^\markup { \center-column { a \line { bbb c } } }
@end lilypond


Markups can be stored in variables.  Such variables may be
directly attached to notes:

@lilypond[quote,verbatim]
allegro = \markup { \bold \large Allegro }

{
  d''8.^\allegro
  d'16 d'4 r2
}
@end lilypond


@noindent
An exhaustive list of @code{\markup}-specific commands can be found in
@ref{Text markup commands}.


@seealso

Notation Reference:
@ref{Text markup commands}.

Snippets:
@rlsr{Text}.

Internals Reference:
@rinternals{TextScript}.

Installed files:
@file{scm/@/markup@/.scm}.


@knownissues

Syntax errors for markup mode can be confusing.


@node Selecting font and font size
@subsubsection Selecting font and font size

@cindex font switching
@funindex \italic
@funindex \bold
@funindex \underline

Basic font switching is supported in markup mode:

@lilypond[quote,verbatim,relative=2]
{
  d1^\markup { 
    \bold { Più mosso } 
    \italic { non troppo \underline Vivo } 
  }
  r2 r4 r8
  d,_\markup { \italic quasi \smallCaps Tromba }
  f1 d2 r
}
@end lilypond

@cindex font size
@cindex text size
@funindex \fontsize
@funindex \smaller
@funindex \larger
@funindex \bigger
@funindex \magnify

The size of the characters can also be altered in different ways:
@itemize
@item
the font size can be defined to an absolute value,

@item
predefined commands allow to easily select standard sizes,

@item
the font size can also be changed relatively to its previous value.
@end itemize

@noindent
The following example demonstrates these three methods:

@lilypond[quote,verbatim,relative=2]
{
  f1^\markup { \fontsize #5 Sinfonia } 
  a,_\markup { 
    \tiny espressivo
    \large e
    \normalsize intenso 
  }
  bes^\markup { (con 
    \larger grande 
    \smaller emozione 
    \magnify #0.6 { e sentimento } )
  }
  d c2 r8 c bes a g1
}
@end lilypond

@cindex subscript
@cindex superscript
@funindex \super
@funindex \sub

Text may be printed as subscript or superscript. By default
these are printed in a smaller size, but a normal size can be used as well:

@lilypond[quote,verbatim]
\markup {
  \column {
    \line { 1 \super st movement }
    \line { 1 \normal-size-super st movement 
      \sub { (part two) }  }
  }
}
@end lilypond

@cindex font families

The markup mode provides an easy way to select alternate
font families.  The default serif font, of roman type, is
automatically selected unless specified otherwise: on the
last line of the following example, there is no difference
between the first and the second word.

@lilypond[quote,verbatim]
\markup {
  \column {
    \line { Act \number 1 }
    \line { \sans { Scene I. } }
    \line { \typewriter { Verona. An open place. } }
    \line { Enter \roman Valentine and Proteus. }
  }
}
@end lilypond

@noindent
Some of these font families, used for specific items
such as numbers or dynamics, do not provide all
characters, as mentioned in @ref{New dynamic marks} and
@ref{Manual repeat marks}.

@c \concat is actually documented in Align (it is not
@c a font-switching command). But we need it here. -vv

When used inside a word, some font-switching or formatting
commands may produce an unwanted blank space.  This can
easily be solved by concatenating the text elements together:

@lilypond[quote,verbatim]
\markup {
  \column {
    \line {
      \concat { 1 \super st }
      movement
    }
    \line {
      \concat { \dynamic p , }
      \italic { con dolce espressione }
    }
  }
}
@end lilypond

An exhaustive list of font-switching, font-size
and font-families related commands can be found in @ref{Font}.

Defining custom font sets is also possible, as explained in
@ref{Fonts}.

@predefined

@funindex \teeny
@funindex \tiny
@funindex \small
@funindex \normalsize
@funindex \large
@funindex \huge
@code{\teeny},
@code{\tiny},
@code{\small},
@code{\normalsize},
@code{\large},
@code{\huge}.

@seealso
Notation Reference:
@ref{Font},
@ref{New dynamic marks},
@ref{Manual repeat marks},
@ref{Fonts}.

Snippets:
@rlsr{Text}.

Internals Reference:
@rinternals{TextScript}.

Installed files:
@file{scm/@/define@/-markup@/-commands@/.scm}.


@node Text alignment
@subsubsection Text alignment

@cindex text, aligning
@cindex aligning text

This subsection discusses how to place text in markup mode,
inside a @code{\markup} block.  Markup objects can also
be moved as a whole, using the syntax described in
@rlearning{Moving objects}.

@c Padding commands should be mentioned on this page, but
@c most of these require \box to be more clearly illustrated. -vv

@cindex text, horizontal alignment
@cindex horizontal text alignment
@funindex \left-align
@funindex \center-align
@funindex \right-align

Markup objects may be aligned in different ways.  By default,
a text indication is aligned on its left edge: in the following
example, there is no difference
between the first and the second markup.

@lilypond[quote,verbatim,fragment,relative=1]
a1-\markup { poco }
e'
a,-\markup { \left-align poco }
e'
a,-\markup { \center-align { poco } }
e'
a,-\markup { \right-align poco }
@end lilypond

@funindex \halign

Horizontal alignment may be fine-tuned
using a numeric value:

@lilypond[quote,verbatim,fragment,relative=1]
a1-\markup { \halign #-1 poco }
e'
a,-\markup { \halign #0 poco }
e'
a,-\markup { \halign #0.5 poco }
e'
a,-\markup { \halign #2 poco }
@end lilypond

@noindent
Some objects may have alignment procedures of their own,
and therefore are not affected by these commands.  It is
possible to move such markup objects as a whole, as shown
for instance in @ref{Text marks},

@cindex text, vertical alignment
@cindex vertical text alignment
@funindex \raise
@funindex \lower

Vertical alignment is a bit more complex.  As stated above,
markup objects can be moved as a whole; however, it is also
possible to move specific elements inside a markup block.
In this case, the element to be moved needs to be preceded
with an @emph{anchor point}, that can be another markup element
or an invisible object.  The following example demonstrates these
two possibilities; the last markup in this example has no anchor
point, and therefore is not moved.

@lilypond[quote,verbatim,fragment,relative=1]
d2^\markup { 
  Acte I
  \raise #2 { Scène 1 } }
a'
g_\markup {
  \null
  \lower #4 \bold { Très modéré } }
a
d,^\markup {
  \raise #4 \italic { Une forêt. } }
a'4 a g2 a
@end lilypond

@funindex \general-align
@funindex \translate
@funindex \translate-scaled

Some commands can affect both the horizontal and vertical
alignment of text objects in markup mode.  Any object
affected by these commands must be preceded with an
anchor point:

@lilypond[quote,verbatim,fragment,relative=1]
d2^\markup {
  Acte I
  \translate #'(-1 . 2) "Scène 1" }
a'
g_\markup {
  \null
  \general-align #Y #3.2 \bold "Très modéré" }
a
d,^\markup {
  \null
  \translate-scaled #'(-1 . 2) \teeny "Une forêt." }
a'4 a g2 a
@end lilypond

@funindex \column
@funindex \center-column

@cindex multi-line markup
@cindex multi-line text
@cindex columns, text

A markup object may include several lines of text.
In the following example, each element or expression
is placed on its own line, either left-aligned or centered:

@lilypond[quote,verbatim]
\markup {
  \column {
    a
    "b c"
    \line { d e f }
  }
  \hspace #10
  \center-column {
    a
    "b c"
    \line { d e f }
  }
}
@end lilypond

@funindex \fill-line

@cindex centering text on the page

Similarly, a list of elements or expressions may be
spread to fill the entire horizontal line width (if there
is only one element, it will be centered on the page).
These expressions can, in turn, include multi-line text
or any other markup expression:

@lilypond[quote,verbatim]
\markup {
  \fill-line {
    \line { William S. Gilbert }
    \center-column {
      \huge \smallCaps "The Mikado"
      or
      \smallCaps "The Town of Titipu"
    }
    \line { Sir Arthur Sullivan }
  }
}
\markup {
  \fill-line { 1885 } 
}
@end lilypond

@funindex \wordwrap
@funindex \justify

@cindex wordwrapped text
@cindex justified text

Long text indications can also be automatically wrapped
accordingly to the given line width.  These will be
either left-aligned or justified, as shown in
the following example.

@lilypond[quote,verbatim]
\markup {
  \column {
    \line  \smallCaps { La vida breve }
    \line \bold { Acto I }
    \wordwrap \italic {
      (La escena representa el corral de una casa de
      gitanos en el Albaicín de Granada. Al fondo una
      puerta por la que se vé el negro interior de
      una Fragua, iluminado por los rojos resplandores
      del fuego.) 
    }
    \hspace #0

    \line \bold { Acto II }
    \override #'(line-width . 50)
    \justify \italic {
      (Calle de Granada. Fachada de la casa de Carmela
      y su hermano Manuel con grandes ventanas abiertas
      a través de las que se ve el patio
      donde se celebra una alegre fiesta)
    }
  }
}
@end lilypond

An exhaustive list of text alignment commands
can be found in @ref{Align}.

@seealso
Learning Manual:
@rlearning{Moving objects}.

Notation Reference:
@ref{Align},
@ref{Text marks}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextScript}.

Installed files:
@file{scm/@/define@/-markup@/-commands@/.scm}.


@node Graphic notation inside markup
@subsubsection Graphic notation inside markup

@cindex graphics, embedding
@cindex drawing graphic objects

Various graphic objects may be added to a score,
using specific markup commands.

@funindex \box
@funindex \circle
@funindex \rounded-box
@funindex \bracket
@funindex \hbracket

@cindex decorating text
@cindex framing text

Some markup commands allow to decorate text elements
with graphics, as demonstrated in the following example.

@lilypond[quote,verbatim]
\markup \fill-line {
  \center-column {
    \circle Jack
    \box "in the box"
    \null
    \line {
      Erik Satie
      \hspace #3
      \bracket "1866 - 1925"
    }
    \null
    \rounded-box \bold Prelude
  }
}
@end lilypond

@funindex \pad-markup
@funindex \pad-x
@funindex \pad-to-box
@funindex \pad-around

@cindex padding around text
@cindex text padding

Some commands may require to increase the padding around
the text: this is achieved with some specific commands
exhaustively described in @ref{Align}.

@lilypond[quote,verbatim]
\markup \fill-line {
  \center-column {
    \box "Charles Ives (1874 - 1954)"
    \null
    \box \pad-markup #2 "THE UNANSWERED QUESTION"
    \box \pad-x #8 "A Cosmic Landscape"
    \null
  }
}
\markup \column {
  \line {
    \hspace #10
    \box \pad-to-box #'(-5 . 20) #'(0 . 5)
      \bold "Largo to Presto"
  }
  \pad-around #3
      "String quartet keeps very even time,
Flute quartet keeps very uneven time."
}
@end lilypond

@funindex \combine
@funindex \draw-circle
@funindex \filled-box
@funindex \triangle
@funindex \draw-line
@funindex \arrow-head

@cindex graphic notation
@cindex symbols, non-musical

Other graphic elements or symbols may be printed
without requiring any text.  As with any markup
expression, such objects can be combined together:

@lilypond[quote,verbatim]
\markup {
  \combine
    \draw-circle #4 #0.4 ##f
    \filled-box #'(-4 . 4) #'(-0.5 . 0.5) #1
  \hspace #5

  \center-column {
    \triangle ##t
    \combine
      \draw-line #'(0 . 4)
      \arrow-head #Y #DOWN ##f
  }
}
@end lilypond

@funindex \epsfile
@funindex \postscript

@cindex embedded graphics
@cindex images, embedding
@cindex graphics, embedding
@cindex postscript

Advanced graphic features include the ability to
include external image files converted to the
Encapsulated PostScript format (@emph{eps}), or
to directly embed graphics into the input file,
using native PostScript code.

@lilypond[quote,verbatim,fragment,relative=1]
c1^\markup {
  \combine
    \epsfile #X #10 #"./context-example.eps"
    \postscript #"
      -2 3 translate
      2.7 2 scale
      newpath
      2 -1 moveto
      4 -2 4 1 1 arct
      4 2 3 3 1 arct
      0 4 0 3 1 arct
      0 0 1 -1 1 arct
      closepath
      stroke"
  }
c
@end lilypond

An exhaustive list of graphics-specific commands
can be found in @ref{Graphic}.

@seealso
Notation Reference:
@ref{Graphic},
@ref{Editorial annotations}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextScript}.

Installed files:
@file{scm/@/define@/-markup@/-commands@/.scm},
@file{scm/@/stencil@/.scm}.

@node Music notation inside markup
@subsubsection Music notation inside markup

Various musical notation elements may be added
to a score, inside a markup object.

Notes and accidentals can be entered using specific
commands:

@lilypond[quote,verbatim,fragment,relative=2]
a2 a^\markup {
  \note #"4" #1
  =
  \note-by-number #1 #1 #1.5
}
b1_\markup {
  \natural \semiflat \flat
  \sesquiflat \doubleflat
}
\glissando
a1_\markup {
  \natural \semisharp \sharp
  \sesquisharp \doublesharp
}
\glissando b
@end lilypond

Other notation objects may also be printed
in markup mode:

@lilypond[quote,verbatim,fragment,relative=1]
g1 bes
ees-\markup {
  \finger 4
  \tied-lyric #"~"
  \finger 1
}
fis_\markup { \dynamic rf }
bes^\markup {
  \beam #8 #0.1 #0.5
}
cis
d-\markup {
  \markalphabet #8
  \markletter #8
}
@end lilypond 

More generally, any available musical symbol may be
included separately in a markup object, as demonstrated
below; an exhaustive list of these symbols and their
names can be found in @ref{The Feta font}.

@lilypond[quote,verbatim,fragment,relative=2]
c2
c'^\markup { \musicglyph #"eight" }
c,4
c,8._\markup { \musicglyph #"clefs.G_change" }
c16
c2^\markup { \musicglyph #"timesig.neomensural94" }
@end lilypond
@c TODO: add \lookup here? -vv

@noindent
Another way of including non-text glyphs is described
in @ref{Fonts explained}.

The markup mode also supports diagrams for specific
instruments:

@lilypond[quote,verbatim,fragment,relative=2]
c1^\markup {
  \fret-diagram-terse #"x;x;o;2;3;2;"
}
c^\markup {
  \harp-pedal #"^-v|--ov^"
}
c
c^\markup {
  \combine
    \musicglyph #"accordion.accDiscant"
    \combine
      \raise #0.5 \musicglyph #"accordion.accDot"
      \raise #1.5 \musicglyph #"accordion.accDot"
}
@end lilypond

@c The accordion diagram is actually taken from a snippet.

@noindent
Such diagrams are documented in @ref{Instrument Specific Markup}.

A whole score can even be nested inside a markup object.
In such a case, the nested @code{\score} block must
contain a @code{\layout} block, as demonstrated here:

@lilypond[quote,verbatim,fragment,relative=1]
c4 d^\markup {
  \score {
    \relative { c4 d e f }
    \layout { }
  }
}
e f |
c d e f
@end lilypond

An exhaustive list of music notation related commands can be
found in @ref{Music}.

@seealso
Notation Reference:
@ref{Music},
@ref{The Feta font},
@ref{Fonts explained}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextScript}.

Installed files:
@file{scm/@/define@/-markup@/-commands@/.scm},
@file{scm/@/fret@/-diagrams@/.scm},
@file{scm/@/harp@/-pedals@/.scm}.

@node Multi-page markup
@subsubsection Multi-page markup

Although standard markup objects are not breakable, a
specific syntax allows to enter lines of text that can
spread over multiple pages:

@lilypond[quote,verbatim]
\markuplines {
  \justified-lines {
    A very long text of justified lines.
    ...
  }
  \wordwrap-lines {
    An other very long paragraph.
    ...
  }
  ...
}
@end lilypond

This specific syntax accepts a list of markups, that can be
@itemize
@item
the result of a markup list command,
@item
a list of markups,
@item
a list of markup lists.
@end itemize

An exhaustive list of markup list commands can be found in
@ref{Text markup list commands}.

@seealso
Notation Reference:
@ref{Text markup list commands},
@ref{New markup list command definition}.

Snippets:
@rlsr{Text}.

Internals Reference: @rinternals{TextScript}.

Installed files:
@file{scm/@/define@/-markup@/-commands@/.scm}.

@predefined
@funindex \markuplines
@code{\markuplines}


@node Fonts
@subsection Fonts

This section presents the way fonts are handled,
and how they may be changed in scores.

@menu
* Fonts explained::
* Single entry fonts::
* Entire document fonts::
@end menu

@node Fonts explained
@subsubsection Fonts explained

@cindex Pango
@cindex fonts, explained
@funindex font-interface

Fonts are handled through several libraries.
FontConfig is used to detect available fonts on the system;
the selected fonts are rendered using Pango.

Music notation fonts can be described as a set of
specific glyphs, ordered in several families.
The following syntax allows to directly use various
LilyPond @code{feta} non-text fonts in markup mode:

@lilypond[quote,verbatim,fragment,relative=2]
a1^\markup {
  \vcenter {
    \override #'(font-encoding . fetaBraces)
    \lookup #"brace120"
    \override #'(font-encoding . fetaNumber)
    \column { 1 3 }
    \override #'(font-encoding . fetaDynamic)
    sf
    \override #'(font-encoding . fetaMusic)
    \lookup #"noteheads.s0petrucci"
  }
}
@end lilypond

@noindent
A simpler, but more limited syntax is also described in
@ref{Music notation inside markup}.

Three families of text fonts are made available: the
@emph{roman} (serif) font, that defaults to New Century
Schoolbook, the @emph{sans} font and the monospaced
@emph{typewriter} font -- these last two families are
determined by the Pango installation.

Each family may include different shapes and series.
The following example demonstrates the ability to select
alternate families, shapes, series and sizes:

@lilypond[quote,verbatim,fragment,relative=2]
  \override Score.RehearsalMark #'font-family = #'typewriter
  \mark \markup "Ouverture"
  \key d \major
  \override  Voice.TextScript #'font-shape = #'italic
  \override  Voice.TextScript #'font-series = #'bold
  d''2.^\markup "Allegro"
  r4
@end lilypond

@noindent
A similar syntax may be used in markup mode, however in this case
it is preferable to use the simpler syntax explained in
@ref{Selecting font and font size}:

@lilypond[quote,verbatim]
\markup {
  \column {
    \line {
      \override #'(font-shape . italic)
      \override #'(font-size . 4)
      Idomeneo,
    }
    \line {
      \override #'(font-family . typewriter)
      {
        \override #'(font-series . bold)
        re
        di
      }
      \override #'(font-family . sans)
      Creta
    }
  }
}
@end lilypond

@ignore
@c FIXME: This needs an example -vv

The size of the font may be set with the @code{font-size}
property.  The resulting size is taken relative to the
@code{text-font-size} as defined in the @code{\paper} block.
@end ignore

Although it is easy to switch between preconfigured fonts,
it is also possible to use other fonts, as explained in the
following sections: @ref{Single entry fonts} and
@ref{Entire document fonts}.

@seealso
Notation Reference:
@ref{The Feta font},
@ref{Music notation inside markup},
@ref{Selecting font and font size},
@ref{Font}.

@node Single entry fonts
@subsubsection Single entry fonts

Any font that is installed on the operating system and recognized
by FontConfig may be used in a score, using the following syntax:

@lilypond[quote,verbatim,fragment,relative=1]
\override Staff.TimeSignature #'font-name = #"Charter"
\override Staff.TimeSignature #'font-size = #2
\time 3/4

c1_\markup {
  \override #'(font-name . "Vera Bold")
    { Vera Bold }
}
@end lilypond

@funindex show-available-fonts

The following command displays a list of all available fonts
on the operating system:

@example
lilypond -dshow-available-fonts x
@end example

@noindent
The last argument of the command can be anything, but has to be
present.

@seealso
Notation Reference:
@ref{Fonts explained},
@ref{Entire document fonts}.

Snippets:
@rlsr{Text}.

Installed files:
@file{lily/@/font@/-config@/-scheme@/.cc}.

@node Entire document fonts
@subsubsection Entire document fonts


It is possible to change the default font families for the
entire document.  In such a case, the following syntax has
to be used, by providing three font families that will be
respectively used as @emph{roman}, @emph{sans} and @emph{typewriter}
fonts, as explained in @ref{Fonts explained}.

@cindex font families, setting
@funindex make-pango-font-tree

@lilypond[verbatim,quote]
\paper  {
  myStaffSize = #20
  #(define fonts
    (make-pango-font-tree "Times New Roman"
                          "Nimbus Sans"
                          "Luxi Mono"
                           (/ myStaffSize 20)))
}

\relative c'{
  c1-\markup {
    roman,
    \sans sans,
    \typewriter typewriter. }
}
@end lilypond

@c we don't do Helvetica / Courier, since GS incorrectly loads
@c Apple TTF fonts

@seealso
Notation Reference:
@ref{Fonts explained},
@ref{Single entry fonts},
@ref{Selecting font and font size},
@ref{Font}.