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<a name="MensuralVoice"></a>
Next: <a rel="next" accesskey="n" href="NoteNames.es.html#NoteNames">NoteNames</a>,
Previous: <a rel="previous" accesskey="p" href="MensuralStaff.es.html#MensuralStaff">MensuralStaff</a>,
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<h4 class="unnumberedsubsec">MensuralVoice</h4>
<p>Same as <code>Voice</code> context, except that it is
accommodated for typesetting a piece in mensural style.
<p>This context also accepts commands for the following context(s):
<p>Voice.
<p>This context creates the following layout object(s):
<p><a href="Arpeggio.es.html#Arpeggio">Arpeggio</a>, <a href="Beam.es.html#Beam">Beam</a>, <a href="BendAfter.es.html#BendAfter">BendAfter</a>, <a href="BreathingSign.es.html#BreathingSign">BreathingSign</a>, <a href="ClusterSpannerBeacon.es.html#ClusterSpannerBeacon">ClusterSpannerBeacon</a>, <a href="ClusterSpanner.es.html#ClusterSpanner">ClusterSpanner</a>, <a href="CombineTextScript.es.html#CombineTextScript">CombineTextScript</a>, <a href="Dots.es.html#Dots">Dots</a>, <a href="DoublePercentRepeatCounter.es.html#DoublePercentRepeatCounter">DoublePercentRepeatCounter</a>, <a href="DoublePercentRepeat.es.html#DoublePercentRepeat">DoublePercentRepeat</a>, <a href="DynamicLineSpanner.es.html#DynamicLineSpanner">DynamicLineSpanner</a>, <a href="DynamicTextSpanner.es.html#DynamicTextSpanner">DynamicTextSpanner</a>, <a href="DynamicText.es.html#DynamicText">DynamicText</a>, <a href="Fingering.es.html#Fingering">Fingering</a>, <a href="Glissando.es.html#Glissando">Glissando</a>, <a href="Hairpin.es.html#Hairpin">Hairpin</a>, <a href="InstrumentSwitch.es.html#InstrumentSwitch">InstrumentSwitch</a>, <a href="LaissezVibrerTieColumn.es.html#LaissezVibrerTieColumn">LaissezVibrerTieColumn</a>, <a href="LaissezVibrerTie.es.html#LaissezVibrerTie">LaissezVibrerTie</a>, <a href="MensuralLigature.es.html#MensuralLigature">MensuralLigature</a>, <a href="MultiMeasureRestNumber.es.html#MultiMeasureRestNumber">MultiMeasureRestNumber</a>, <a href="MultiMeasureRestText.es.html#MultiMeasureRestText">MultiMeasureRestText</a>, <a href="MultiMeasureRest.es.html#MultiMeasureRest">MultiMeasureRest</a>, <a href="NoteColumn.es.html#NoteColumn">NoteColumn</a>, <a href="NoteHead.es.html#NoteHead">NoteHead</a>, <a href="NoteSpacing.es.html#NoteSpacing">NoteSpacing</a>, <a href="PercentRepeatCounter.es.html#PercentRepeatCounter">PercentRepeatCounter</a>, <a href="PercentRepeat.es.html#PercentRepeat">PercentRepeat</a>, <a href="PhrasingSlur.es.html#PhrasingSlur">PhrasingSlur</a>, <a href="RepeatSlash.es.html#RepeatSlash">RepeatSlash</a>, <a href="RepeatTieColumn.es.html#RepeatTieColumn">RepeatTieColumn</a>, <a href="RepeatTie.es.html#RepeatTie">RepeatTie</a>, <a href="Rest.es.html#Rest">Rest</a>, <a href="ScriptColumn.es.html#ScriptColumn">ScriptColumn</a>, <a href="Script.es.html#Script">Script</a>, <a href="StemTremolo.es.html#StemTremolo">StemTremolo</a>, <a href="Stem.es.html#Stem">Stem</a>, <a href="StringNumber.es.html#StringNumber">StringNumber</a>, <a href="StrokeFinger.es.html#StrokeFinger">StrokeFinger</a>, <a href="TextScript.es.html#TextScript">TextScript</a>, <a href="TextSpanner.es.html#TextSpanner">TextSpanner</a>, <a href="TieColumn.es.html#TieColumn">TieColumn</a>, <a href="Tie.es.html#Tie">Tie</a>, <a href="TrillPitchAccidental.es.html#TrillPitchAccidental">TrillPitchAccidental</a>, <a href="TrillPitchGroup.es.html#TrillPitchGroup">TrillPitchGroup</a>, <a href="TrillPitchHead.es.html#TrillPitchHead">TrillPitchHead</a>, <a href="TrillSpanner.es.html#TrillSpanner">TrillSpanner</a>, <a href="TupletBracket.es.html#TupletBracket">TupletBracket</a>, <a href="TupletNumber.es.html#TupletNumber">TupletNumber</a> and <a href="VoiceFollower.es.html#VoiceFollower">VoiceFollower</a>.
<p>This context sets the following properties:
<ul>
<li>Set translator property <code>autoBeaming</code> to <code>#f</code>.
<li>Set grob-property <code>style</code> in <a href="NoteHead.es.html#NoteHead">NoteHead</a> to <code>'petrucci</code>.
<li>Set translator property <code>localKeySignature</code> to <code>'()</code>.
</ul>
<p>This context is a `bottom' context; it cannot contain other contexts.
<p>This context is built from the following engraver(s):
<blockquote>
<dl>
<dt><code><a href="Mensural_005fligature_005fengraver.es.html#Mensural_005fligature_005fengraver">Mensural_ligature_engraver</a></code><dd>Handle <code>Mensural_ligature_events</code> by glueing special ligature heads together.
<p>Music types accepted:
<p><a href="ligature_002devent.es.html#ligature_002devent">ligature-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="MensuralLigature.es.html#MensuralLigature">MensuralLigature</a>.
<br><dt><code><a href="Skip_005fevent_005fswallow_005ftranslator.es.html#Skip_005fevent_005fswallow_005ftranslator">Skip_event_swallow_translator</a></code><dd>Swallow <code>\skip</code>.
<br><dt><code><a href="Instrument_005fswitch_005fengraver.es.html#Instrument_005fswitch_005fengraver">Instrument_switch_engraver</a></code><dd>Create a cue text for taking instrument.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>instrumentCueName</code> (markup)<dd>The name to print if another
instrument is to be taken.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="InstrumentSwitch.es.html#InstrumentSwitch">InstrumentSwitch</a>.
<br><dt><code><a href="Grace_005fengraver.es.html#Grace_005fengraver">Grace_engraver</a></code><dd>Set font size and other properties for grace notes.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>graceSettings</code> (list)<dd>Overrides for grace notes. This property
should be manipulated through the <code>add-grace-property</code> function.
</dl>
</blockquote>
<br><dt><code><a href="Tuplet_005fengraver.es.html#Tuplet_005fengraver">Tuplet_engraver</a></code><dd>Catch tuplet events and generate appropriate bracket.
<p>Music types accepted:
<p><a href="tuplet_002dspan_002devent.es.html#tuplet_002dspan_002devent">tuplet-span-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>tupletFullLength</code> (boolean)<dd>If set, the tuplet is printed up to
the start of the next note.
<br><dt><code>tupletFullLengthNote</code> (boolean)<dd>If set, end at the next note,
otherwise end on the matter (time signatures, etc.) before the note.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="TupletBracket.es.html#TupletBracket">TupletBracket</a> and <a href="TupletNumber.es.html#TupletNumber">TupletNumber</a>.
<br><dt><code><a href="Tie_005fengraver.es.html#Tie_005fengraver">Tie_engraver</a></code><dd>Generate ties between note heads of equal pitch.
<p>Music types accepted:
<p><a href="tie_002devent.es.html#tie_002devent">tie-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>tieWaitForNote</code> (boolean)<dd>If true, tied notes do not have to
follow each other directly. This can be used for writing out
arpeggios.
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>tieMelismaBusy</code> (boolean)<dd>Signal whether a tie is present.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Tie.es.html#Tie">Tie</a> and <a href="TieColumn.es.html#TieColumn">TieColumn</a>.
<br><dt><code><a href="Cluster_005fspanner_005fengraver.es.html#Cluster_005fspanner_005fengraver">Cluster_spanner_engraver</a></code><dd>Engrave a cluster using <code>Spanner</code> notation.
<p>Music types accepted:
<p><a href="cluster_002dnote_002devent.es.html#cluster_002dnote_002devent">cluster-note-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="ClusterSpanner.es.html#ClusterSpanner">ClusterSpanner</a> and <a href="ClusterSpannerBeacon.es.html#ClusterSpannerBeacon">ClusterSpannerBeacon</a>.
<br><dt><code><a href="Phrasing_005fslur_005fengraver.es.html#Phrasing_005fslur_005fengraver">Phrasing_slur_engraver</a></code><dd>Print phrasing slurs. Similar to <a href="Slur_005fengraver.es.html#Slur_005fengraver">Slur_engraver</a>.
<p>Music types accepted:
<p><a href="phrasing_002dslur_002devent.es.html#phrasing_002dslur_002devent">phrasing-slur-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="PhrasingSlur.es.html#PhrasingSlur">PhrasingSlur</a>.
<br><dt><code><a href="Spanner_005fbreak_005fforbid_005fengraver.es.html#Spanner_005fbreak_005fforbid_005fengraver">Spanner_break_forbid_engraver</a></code><dd>Forbid breaks in certain spanners.
<br><dt><code><a href="Note_005fspacing_005fengraver.es.html#Note_005fspacing_005fengraver">Note_spacing_engraver</a></code><dd>Generate <code>NoteSpacing</code>, an object linking horizontal lines for use in spacing.
<p>This engraver creates the following layout object(s):
<p><a href="NoteSpacing.es.html#NoteSpacing">NoteSpacing</a>.
<br><dt><code><a href="Rhythmic_005fcolumn_005fengraver.es.html#Rhythmic_005fcolumn_005fengraver">Rhythmic_column_engraver</a></code><dd>Generate <code>NoteColumn</code>, an object that groups stems, note heads, and rests.
<p>This engraver creates the following layout object(s):
<p><a href="NoteColumn.es.html#NoteColumn">NoteColumn</a>.
<br><dt><code><a href="Script_005fcolumn_005fengraver.es.html#Script_005fcolumn_005fengraver">Script_column_engraver</a></code><dd>Find potentially colliding scripts and put them into a <code>ScriptColumn</code> object; that will fix the collisions.
<p>This engraver creates the following layout object(s):
<p><a href="ScriptColumn.es.html#ScriptColumn">ScriptColumn</a>.
<br><dt><code><a href="Script_005fengraver.es.html#Script_005fengraver">Script_engraver</a></code><dd>Handle note scripted articulations.
<p>Music types accepted:
<p><a href="articulation_002devent.es.html#articulation_002devent">articulation-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>scriptDefinitions</code> (list)<dd>The description of scripts. This is
used by the <code>Script_engraver</code> for typesetting note-superscripts
and subscripts. See <samp><span class="file">scm/script.scm</span></samp> for more information.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Script.es.html#Script">Script</a>.
<br><dt><code><a href="Bend_005fengraver.es.html#Bend_005fengraver">Bend_engraver</a></code><dd>Create fall spanners.
<p>Music types accepted:
<p><a href="bend_002dafter_002devent.es.html#bend_002dafter_002devent">bend-after-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="BendAfter.es.html#BendAfter">BendAfter</a>.
<br><dt><code><a href="Fingering_005fengraver.es.html#Fingering_005fengraver">Fingering_engraver</a></code><dd>Create fingering scripts.
<p>Music types accepted:
<p><a href="stroke_002dfinger_002devent.es.html#stroke_002dfinger_002devent">stroke-finger-event</a> and <a href="fingering_002devent.es.html#fingering_002devent">fingering-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="Fingering.es.html#Fingering">Fingering</a>.
<br><dt><code><a href="Dynamic_005falign_005fengraver.es.html#Dynamic_005falign_005fengraver">Dynamic_align_engraver</a></code><dd>Align hairpins and dynamic texts on a horizontal line
<p>Properties (read)
<blockquote>
<dl>
<dt><code>currentMusicalColumn</code> (layout object)<dd>Grob that is X-parent to all
non-breakable items (note heads, lyrics, etc.).
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="DynamicLineSpanner.es.html#DynamicLineSpanner">DynamicLineSpanner</a>.
<br><dt><code><a href="New_005fdynamic_005fengraver.es.html#New_005fdynamic_005fengraver">New_dynamic_engraver</a></code><dd>Create hairpins, dynamic texts, and their vertical alignments. The symbols are collected onto a <code>DynamicLineSpanner</code> grob which takes care of vertical positioning.
<p>Music types accepted:
<p><a href="span_002ddynamic_002devent.es.html#span_002ddynamic_002devent">span-dynamic-event</a> and <a href="absolute_002ddynamic_002devent.es.html#absolute_002ddynamic_002devent">absolute-dynamic-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>currentMusicalColumn</code> (layout object)<dd>Grob that is X-parent to all
non-breakable items (note heads, lyrics, etc.).
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="DynamicText.es.html#DynamicText">DynamicText</a>, <a href="DynamicTextSpanner.es.html#DynamicTextSpanner">DynamicTextSpanner</a>, <a href="Hairpin.es.html#Hairpin">Hairpin</a> and <a href="TextSpanner.es.html#TextSpanner">TextSpanner</a>.
<br><dt><code><a href="Text_005fengraver.es.html#Text_005fengraver">Text_engraver</a></code><dd>Create text scripts.
<p>Music types accepted:
<p><a href="text_002dscript_002devent.es.html#text_002dscript_002devent">text-script-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="TextScript.es.html#TextScript">TextScript</a>.
<br><dt><code><a href="Part_005fcombine_005fengraver.es.html#Part_005fcombine_005fengraver">Part_combine_engraver</a></code><dd>Part combine engraver for orchestral scores: Print markings ‘a2’, ‘Solo’, ‘Solo II’, and ‘unisono’.
<p>Music types accepted:
<p><a href="part_002dcombine_002devent.es.html#part_002dcombine_002devent">part-combine-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>printPartCombineTexts</code> (boolean)<dd>Set ‘Solo’ and ‘A due’ texts
in the part combiner?
<br><dt><code>soloText</code> (markup)<dd>The text for the start of a solo when
part-combining.
<br><dt><code>soloIIText</code> (markup)<dd>The text for the start of a solo for
voice ‘two’ when part-combining.
<br><dt><code>aDueText</code> (markup)<dd>Text to print at a unisono passage.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="CombineTextScript.es.html#CombineTextScript">CombineTextScript</a>.
<br><dt><code><a href="Slash_005frepeat_005fengraver.es.html#Slash_005frepeat_005fengraver">Slash_repeat_engraver</a></code><dd>Make beat repeats.
<p>Music types accepted:
<p><a href="percent_002devent.es.html#percent_002devent">percent-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>measureLength</code> (moment)<dd>Length of one measure in the current
time signature.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="RepeatSlash.es.html#RepeatSlash">RepeatSlash</a>.
<br><dt><code><a href="Percent_005frepeat_005fengraver.es.html#Percent_005frepeat_005fengraver">Percent_repeat_engraver</a></code><dd>Make whole bar and double bar repeats.
<p>Music types accepted:
<p><a href="percent_002devent.es.html#percent_002devent">percent-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>countPercentRepeats</code> (boolean)<dd>If set, produce counters for
percent repeats.
<br><dt><code>currentCommandColumn</code> (layout object)<dd>Grob that is X-parent to all
current breakable (clef, key signature, etc.) items.
<br><dt><code>measureLength</code> (moment)<dd>Length of one measure in the current
time signature.
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>forbidBreak</code> (boolean)<dd>If set to <code>##t</code>, prevent a line break
at this point.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="DoublePercentRepeat.es.html#DoublePercentRepeat">DoublePercentRepeat</a>, <a href="DoublePercentRepeatCounter.es.html#DoublePercentRepeatCounter">DoublePercentRepeatCounter</a>, <a href="PercentRepeat.es.html#PercentRepeat">PercentRepeat</a> and <a href="PercentRepeatCounter.es.html#PercentRepeatCounter">PercentRepeatCounter</a>.
<br><dt><code><a href="Chord_005ftremolo_005fengraver.es.html#Chord_005ftremolo_005fengraver">Chord_tremolo_engraver</a></code><dd>Generate beams for tremolo repeats.
<p>Music types accepted:
<p><a href="tremolo_002dspan_002devent.es.html#tremolo_002dspan_002devent">tremolo-span-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="Beam.es.html#Beam">Beam</a>.
<br><dt><code><a href="New_005ffingering_005fengraver.es.html#New_005ffingering_005fengraver">New_fingering_engraver</a></code><dd>Create fingering scripts for notes in a new chord. This engraver is ill-named, since it also takes care of articulations and harmonic note heads.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>fingeringOrientations</code> (list)<dd>A list of symbols, containing
‘<samp><span class="samp">left</span></samp>’, ‘<samp><span class="samp">right</span></samp>’, ‘<samp><span class="samp">up</span></samp>’ and/or ‘<samp><span class="samp">down</span></samp>’. This list
determines where fingerings are put relative to the chord being
fingered.
<br><dt><code>strokeFingerOrientations</code> (list)<dd>See
<code>fingeringOrientations</code>.
<br><dt><code>stringNumberOrientations</code> (list)<dd>See
<code>fingeringOrientations</code>.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Fingering.es.html#Fingering">Fingering</a>, <a href="Script.es.html#Script">Script</a>, <a href="StringNumber.es.html#StringNumber">StringNumber</a> and <a href="StrokeFinger.es.html#StrokeFinger">StrokeFinger</a>.
<br><dt><code><a href="Auto_005fbeam_005fengraver.es.html#Auto_005fbeam_005fengraver">Auto_beam_engraver</a></code><dd>Generate beams based on measure characteristics and observed Stems. Uses <code>beatLength</code>, <code>measureLength</code>, and <code>measurePosition</code> to decide when to start and stop a beam. Overriding beaming is done through <a href="Stem_005fengraver.es.html#Stem_005fengraver">Stem_engraver</a> properties <code>stemLeftBeamCount</code> and <code>stemRightBeamCount</code>.
<p>Music types accepted:
<p><a href="beam_002dforbid_002devent.es.html#beam_002dforbid_002devent">beam-forbid-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>autoBeaming</code> (boolean)<dd>If set to true then beams are generated
automatically.
<br><dt><code>autoBeamSettings</code> (list)<dd>Specifies when automatically generated
beams should begin and end. See <a href="../lilypond/Setting-automatic-beam-behavior.es.html#Setting-automatic-beam-behavior">Setting automatic beam behavior</a>
<a name="index-Setting-automatic-beam-4"></a>behavior for more information.
<br><dt><code>beatLength</code> (moment)<dd>The length of one beat in this time
signature.
<br><dt><code>subdivideBeams</code> (boolean)<dd>If set, multiple beams will be
subdivided at beat positions by only drawing one beam over the beat.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Beam.es.html#Beam">Beam</a>.
<br><dt><code><a href="Grace_005fbeam_005fengraver.es.html#Grace_005fbeam_005fengraver">Grace_beam_engraver</a></code><dd>Handle <code>Beam</code> events by engraving beams. If omitted, then notes are printed with flags instead of beams. Only engraves beams when we are at grace points in time.
<p>Music types accepted:
<p><a href="beam_002devent.es.html#beam_002devent">beam-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>beamMelismaBusy</code> (boolean)<dd>Signal if a beam is present.
<br><dt><code>beatLength</code> (moment)<dd>The length of one beat in this time
signature.
<br><dt><code>subdivideBeams</code> (boolean)<dd>If set, multiple beams will be
subdivided at beat positions by only drawing one beam over the beat.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Beam.es.html#Beam">Beam</a>.
<br><dt><code><a href="Beam_005fengraver.es.html#Beam_005fengraver">Beam_engraver</a></code><dd>Handle <code>Beam</code> events by engraving beams. If omitted, then notes are printed with flags instead of beams.
<p>Music types accepted:
<p><a href="beam_002devent.es.html#beam_002devent">beam-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>beamMelismaBusy</code> (boolean)<dd>Signal if a beam is present.
<br><dt><code>beatLength</code> (moment)<dd>The length of one beat in this time
signature.
<br><dt><code>subdivideBeams</code> (boolean)<dd>If set, multiple beams will be
subdivided at beat positions by only drawing one beam over the beat.
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>forbidBreak</code> (boolean)<dd>If set to <code>##t</code>, prevent a line break
at this point.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Beam.es.html#Beam">Beam</a>.
<br><dt><code><a href="Stem_005fengraver.es.html#Stem_005fengraver">Stem_engraver</a></code><dd>Create stems and single-stem tremolos. It also works together with the beam engraver for overriding beaming.
<p>Music types accepted:
<p><a href="tremolo_002devent.es.html#tremolo_002devent">tremolo-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>tremoloFlags</code> (integer)<dd>The number of tremolo flags to add if no
number is specified.
<br><dt><code>stemLeftBeamCount</code> (integer)<dd>Specify the number of beams to draw
on the left side of the next note. Overrides automatic beaming. The
value is only used once, and then it is erased.
<br><dt><code>stemRightBeamCount</code> (integer)<dd>See <code>stemLeftBeamCount</code>.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Stem.es.html#Stem">Stem</a> and <a href="StemTremolo.es.html#StemTremolo">StemTremolo</a>.
<br><dt><code><a href="Tweak_005fengraver.es.html#Tweak_005fengraver">Tweak_engraver</a></code><dd>Read the <code>tweaks</code> property from the originating event, and set properties.
<br><dt><code><a href="Rest_005fengraver.es.html#Rest_005fengraver">Rest_engraver</a></code><dd>Engrave rests.
<p>Music types accepted:
<p><a href="rest_002devent.es.html#rest_002devent">rest-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>middleCPosition</code> (number)<dd>The place of the middle C, measured in
half staff-spaces. Usually determined by looking at
<code>middleCClefPosition</code> and <code>middleCOffset</code>.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Rest.es.html#Rest">Rest</a>.
<br><dt><code><a href="Dots_005fengraver.es.html#Dots_005fengraver">Dots_engraver</a></code><dd>Create <a href="Dots.es.html#Dots">Dots</a> objects for <a href="rhythmic_002dhead_002dinterface.es.html#rhythmic_002dhead_002dinterface">rhythmic-head-interface</a>s.
<p>This engraver creates the following layout object(s):
<p><a href="Dots.es.html#Dots">Dots</a>.
<br><dt><code><a href="Note_005fheads_005fengraver.es.html#Note_005fheads_005fengraver">Note_heads_engraver</a></code><dd>Generate note heads.
<p>Music types accepted:
<p><a href="note_002devent.es.html#note_002devent">note-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>middleCPosition</code> (number)<dd>The place of the middle C, measured in
half staff-spaces. Usually determined by looking at
<code>middleCClefPosition</code> and <code>middleCOffset</code>.
<br><dt><code>staffLineLayoutFunction</code> (procedure)<dd>Layout of staff lines,
<code>traditional</code>, or <code>semitone</code>.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="NoteHead.es.html#NoteHead">NoteHead</a>.
<br><dt><code><a href="Breathing_005fsign_005fengraver.es.html#Breathing_005fsign_005fengraver">Breathing_sign_engraver</a></code><dd>Create a breathing sign.
<p>Music types accepted:
<p><a href="breathing_002devent.es.html#breathing_002devent">breathing-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="BreathingSign.es.html#BreathingSign">BreathingSign</a>.
<br><dt><code><a href="Glissando_005fengraver.es.html#Glissando_005fengraver">Glissando_engraver</a></code><dd>Engrave glissandi.
<p>Music types accepted:
<p><a href="glissando_002devent.es.html#glissando_002devent">glissando-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="Glissando.es.html#Glissando">Glissando</a>.
<br><dt><code><a href="Note_005fhead_005fline_005fengraver.es.html#Note_005fhead_005fline_005fengraver">Note_head_line_engraver</a></code><dd>Engrave a line between two note heads, for example a glissando. If <code>followVoice</code> is set, staff switches also generate a line.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>followVoice</code> (boolean)<dd>If set, note heads are tracked across
staff switches by a thin line.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Glissando.es.html#Glissando">Glissando</a> and <a href="VoiceFollower.es.html#VoiceFollower">VoiceFollower</a>.
<br><dt><code><a href="Repeat_005ftie_005fengraver.es.html#Repeat_005ftie_005fengraver">Repeat_tie_engraver</a></code><dd>Create repeat ties.
<p>Music types accepted:
<p><a href="repeat_002dtie_002devent.es.html#repeat_002dtie_002devent">repeat-tie-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="RepeatTie.es.html#RepeatTie">RepeatTie</a> and <a href="RepeatTieColumn.es.html#RepeatTieColumn">RepeatTieColumn</a>.
<br><dt><code><a href="Laissez_005fvibrer_005fengraver.es.html#Laissez_005fvibrer_005fengraver">Laissez_vibrer_engraver</a></code><dd>Create laissez vibrer items.
<p>Music types accepted:
<p><a href="laissez_002dvibrer_002devent.es.html#laissez_002dvibrer_002devent">laissez-vibrer-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="LaissezVibrerTie.es.html#LaissezVibrerTie">LaissezVibrerTie</a> and <a href="LaissezVibrerTieColumn.es.html#LaissezVibrerTieColumn">LaissezVibrerTieColumn</a>.
<br><dt><code><a href="Forbid_005fline_005fbreak_005fengraver.es.html#Forbid_005fline_005fbreak_005fengraver">Forbid_line_break_engraver</a></code><dd>Forbid line breaks when note heads are still playing at some point.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>busyGrobs</code> (list)<dd>A queue of <code>(</code><var>end-moment</var><code> .
</code><var>GROB</var><code>)</code> cons cells. This is for internal (C++) use only. This
property contains the grobs which are still busy (e.g. note heads,
spanners, etc.).
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>forbidBreak</code> (boolean)<dd>If set to <code>##t</code>, prevent a line break
at this point.
</dl>
</blockquote>
<br><dt><code><a href="Grob_005fpq_005fengraver.es.html#Grob_005fpq_005fengraver">Grob_pq_engraver</a></code><dd>Administrate when certain grobs (e.g., note heads) stop playing.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>busyGrobs</code> (list)<dd>A queue of <code>(</code><var>end-moment</var><code> .
</code><var>GROB</var><code>)</code> cons cells. This is for internal (C++) use only. This
property contains the grobs which are still busy (e.g. note heads,
spanners, etc.).
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>busyGrobs</code> (list)<dd>A queue of <code>(</code><var>end-moment</var><code> .
</code><var>GROB</var><code>)</code> cons cells. This is for internal (C++) use only. This
property contains the grobs which are still busy (e.g. note heads,
spanners, etc.).
</dl>
</blockquote>
<br><dt><code><a href="Trill_005fspanner_005fengraver.es.html#Trill_005fspanner_005fengraver">Trill_spanner_engraver</a></code><dd>Create trill spanner from an event.
<p>Music types accepted:
<p><a href="trill_002dspan_002devent.es.html#trill_002dspan_002devent">trill-span-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="TrillSpanner.es.html#TrillSpanner">TrillSpanner</a>.
<br><dt><code><a href="Text_005fspanner_005fengraver.es.html#Text_005fspanner_005fengraver">Text_spanner_engraver</a></code><dd>Create text spanner from an event.
<p>Music types accepted:
<p><a href="text_002dspan_002devent.es.html#text_002dspan_002devent">text-span-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="TextSpanner.es.html#TextSpanner">TextSpanner</a>.
<br><dt><code><a href="Multi_005fmeasure_005frest_005fengraver.es.html#Multi_005fmeasure_005frest_005fengraver">Multi_measure_rest_engraver</a></code><dd>Engrave multi-measure rests that are produced with ‘<samp><span class="samp">R</span></samp>’. It reads <code>measurePosition</code> and <code>internalBarNumber</code> to determine what number to print over the <a href="MultiMeasureRest.es.html#MultiMeasureRest">MultiMeasureRest</a>. Reads <code>measureLength</code> to determine whether it should use a whole rest or a breve rest to represent one measure.
<p>Music types accepted:
<p><a href="multi_002dmeasure_002dtext_002devent.es.html#multi_002dmeasure_002dtext_002devent">multi-measure-text-event</a> and <a href="multi_002dmeasure_002drest_002devent.es.html#multi_002dmeasure_002drest_002devent">multi-measure-rest-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>internalBarNumber</code> (integer)<dd>Contains the current barnumber.
This property is used for internal timekeeping, among others by the
<code>Accidental_engraver</code>.
<br><dt><code>restNumberThreshold</code> (number)<dd>If a multimeasure rest has more
measures than this, a number is printed.
<br><dt><code>breakableSeparationItem</code> (layout object)<dd>The breakable items in this
time step, for this staff.
<br><dt><code>currentCommandColumn</code> (layout object)<dd>Grob that is X-parent to all
current breakable (clef, key signature, etc.) items.
<br><dt><code>measurePosition</code> (moment)<dd>How much of the current measure have
we had. This can be set manually to create incomplete measures.
<br><dt><code>measureLength</code> (moment)<dd>Length of one measure in the current
time signature.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="MultiMeasureRest.es.html#MultiMeasureRest">MultiMeasureRest</a>, <a href="MultiMeasureRestNumber.es.html#MultiMeasureRestNumber">MultiMeasureRestNumber</a> and <a href="MultiMeasureRestText.es.html#MultiMeasureRestText">MultiMeasureRestText</a>.
<br><dt><code><a href="Arpeggio_005fengraver.es.html#Arpeggio_005fengraver">Arpeggio_engraver</a></code><dd>Generate an Arpeggio symbol.
<p>Music types accepted:
<p><a href="arpeggio_002devent.es.html#arpeggio_002devent">arpeggio-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="Arpeggio.es.html#Arpeggio">Arpeggio</a>.
<br><dt><code><a href="Output_005fproperty_005fengraver.es.html#Output_005fproperty_005fengraver">Output_property_engraver</a></code><dd>Apply a procedure to any grob acknowledged.
<p>Music types accepted:
<p><a href="apply_002doutput_002devent.es.html#apply_002doutput_002devent">apply-output-event</a>
<br><dt><code><a href="Pitched_005ftrill_005fengraver.es.html#Pitched_005ftrill_005fengraver">Pitched_trill_engraver</a></code><dd>Print the bracketed note head after a note head with trill.
<p>This engraver creates the following layout object(s):
<p><a href="TrillPitchAccidental.es.html#TrillPitchAccidental">TrillPitchAccidental</a>, <a href="TrillPitchGroup.es.html#TrillPitchGroup">TrillPitchGroup</a> and <a href="TrillPitchHead.es.html#TrillPitchHead">TrillPitchHead</a>.
<br><dt><code><a href="Font_005fsize_005fengraver.es.html#Font_005fsize_005fengraver">Font_size_engraver</a></code><dd>Put <code>fontSize</code> into <code>font-size</code> grob property.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>fontSize</code> (number)<dd>The relative size of all grobs in a context.
</dl>
</blockquote>
</dl>
</blockquote>
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