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<title>LilyPond program-reference: 2.4 Internal context properties</title>
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<a name="Internal-context-properties"></a>
<h2 class="section">2.4 Internal context properties</h2>
<dl compact="compact">
<dt> <code>associatedVoiceContext</code> (context)</dt>
<dd><p>The context object of the
<code>Voice</code> that has the melody for this <code>Lyrics</code>.
</p></dd>
<dt> <code>barCheckLastFail</code> (moment)</dt>
<dd><p>Where in the measure did the last
barcheck fail?
</p></dd>
<dt> <code>beamMelismaBusy</code> (boolean)</dt>
<dd><p>Signal if a beam is present.
</p></dd>
<dt> <code>breakableSeparationItem</code> (layout object)</dt>
<dd><p>The breakable items in this
time step, for this staff.
</p></dd>
<dt> <code>busyGrobs</code> (list)</dt>
<dd><p>A queue of <code>(<var>end-moment</var> .
<var>GROB</var>)</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.).
</p></dd>
<dt> <code>currentCommandColumn</code> (layout object)</dt>
<dd><p>Grob that is X-parent to all
current breakable (clef, key signature, etc.) items.
</p></dd>
<dt> <code>currentMusicalColumn</code> (layout object)</dt>
<dd><p>Grob that is X-parent to all
non-breakable items (note heads, lyrics, etc.).
</p></dd>
<dt> <code>dynamicAbsoluteVolumeFunction</code> (procedure)</dt>
<dd><p>[DOCUMENT-ME]
</p></dd>
<dt> <code>finalizations</code> (list)</dt>
<dd><p>A list of expressions to evaluate before
proceeding to next time step. This is an internal variable.
</p></dd>
<dt> <code>graceSettings</code> (list)</dt>
<dd><p>Overrides for grace notes. This property
should be manipulated through the <code>add-grace-property</code> function.
</p></dd>
<dt> <code>hasStaffSpacing</code> (boolean)</dt>
<dd><p>True if the current
<code>CommandColumn</code> contains items that will affect spacing.
</p></dd>
<dt> <code>instrumentSupport</code> (list of grobs)</dt>
<dd><p>A list of grobs to attach the
instrument name to.
</p></dd>
<dt> <code>lastKeySignature</code> (list)</dt>
<dd><p>Last key signature before a key
signature change.
</p></dd>
<dt> <code>localKeySignature</code> (list)</dt>
<dd><p>The key signature at this point in the
measure. The format is the same as for <code>keySignature</code>, but can
also contain <code>((<var>octave</var> . <var>name</var>) . (<var>alter</var>
<var>barnumber</var> . <var>measureposition</var>))</code> pairs.
</p></dd>
<dt> <code>melismaBusy</code> (boolean)</dt>
<dd><p>Signifies whether a melisma is active.
This can be used to signal melismas on top of those automatically
detected.
</p></dd>
<dt> <code>originalMiddleCPosition</code> (integer)</dt>
<dd><p>Used for temporary overriding
middle C in octavation brackets.
</p></dd>
<dt> <code>quotedEventTypes</code> (list)</dt>
<dd><p>A list of symbols, representing the
event types that should be duplicated for <code>\quote</code> commands.
</p></dd>
<dt> <code>rootSystem</code> (layout object)</dt>
<dd><p>The System object.
</p></dd>
<dt> <code>scriptDefinitions</code> (list)</dt>
<dd><p>The description of scripts. This is
used by the <code>Script_engraver</code> for typesetting note-superscripts
and subscripts. See ‘<tt>scm/script.scm</tt>’ for more information.
</p></dd>
<dt> <code>slurMelismaBusy</code> (boolean)</dt>
<dd><p>Signal if a slur is present.
</p></dd>
<dt> <code>stavesFound</code> (list of grobs)</dt>
<dd><p>A list of all staff-symbols found.
</p></dd>
<dt> <code>tieMelismaBusy</code> (boolean)</dt>
<dd><p>Signal whether a tie is present.
</p></dd>
</dl>
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<h4 class="toc_header"> <a href="index.html#Top" title="Start of the manual">Internals Reference</a></h4>
<div class="contents">
<ul class="toc">
<li><a name="toc-Music-definitions-1" href="Music-definitions.html#Music-definitions">1. Music definitions</a>
<ul class="toc">
<li><a name="toc-Music-expressions-1" href="Music-expressions.html#Music-expressions">1.1 Music expressions</a> </li>
<li><a name="toc-Music-classes-1" href="Music-classes.html#Music-classes">1.2 Music classes</a> </li>
<li><a name="toc-Music-properties-1" href="Music-properties.html#Music-properties">1.3 Music properties</a> </li>
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<li class="toc_current"><a name="toc-Translation-1" href="Translation.html#Translation">2. Translation</a>
<ul class="toc">
<li><a name="toc-Contexts-1" href="Contexts.html#Contexts">2.1 Contexts</a> </li>
<li><a name="toc-Engravers-and-Performers-1" href="Engravers-and-Performers.html#Engravers-and-Performers">2.2 Engravers and Performers</a> </li>
<li><a name="toc-Tunable-context-properties-1" href="Tunable-context-properties.html#Tunable-context-properties">2.3 Tunable context properties</a> </li>
<li class="toc_current"><a name="toc-Internal-context-properties-1" href="Internal-context-properties.html#Internal-context-properties">2.4 Internal context properties</a> </li>
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<li><a name="toc-Backend-1" href="Backend.html#Backend">3. Backend</a>
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<li><a name="toc-All-layout-objects-1" href="All-layout-objects.html#All-layout-objects">3.1 All layout objects</a> </li>
<li><a name="toc-Graphical-Object-Interfaces-1" href="Graphical-Object-Interfaces.html#Graphical-Object-Interfaces">3.2 Graphical Object Interfaces</a> </li>
<li><a name="toc-User-backend-properties-1" href="User-backend-properties.html#User-backend-properties">3.3 User backend properties</a> </li>
<li><a name="toc-Internal-backend-properties-1" href="Internal-backend-properties.html#Internal-backend-properties">3.4 Internal backend properties</a> </li>
</ul>
</li>
<li><a name="toc-Scheme-functions-1" href="Scheme-functions.html#Scheme-functions">4. Scheme functions</a> </li>
<li><a name="toc-Indices-1" href="Indices.html#Indices">A. Indices</a>
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<li><a name="toc-Concept-index" href="Indices.html#Indices">A.1 Concept index</a> </li>
<li><a name="toc-Function-index" href="Indices.html#Indices">A.2 Function index</a> </li>
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