The beam.group attribute can be used to set a default beaming pattern to be used when no beaming is indicated at the event level. beam.group must contain a comma-separated list of time values that add up to a measure, e.g., in 4/4 time '4,4,4,4' indicates each quarter note worth of shorter notes would be beamed together. Parentheses can be used to indicate sub-groupings of secondary beams. For example, '(4.,4.,4.)' in 9/8 meter indicates one outer beam per measure with secondary beams broken at each dotted quarter duration, while a measure of 16th notes in 4/4 with beam.group equal to '(4,4),(4,4)' will result in a primary beam covering all the notes and secondary beams for each group of 4 notes. This beaming "directive" can be overridden by using beam elements. If neither beam elements or the beam.group attribute is used, then no beaming is rendered. Beaming can be explicitly 'turned off' by setting beam.group to an empty string.
<classSpec ident="att.beaming.log" module="MEI.cmn" type="atts">
<desc xml:lang="en">Used by layerDef, staffDef, and scoreDef to provide default values for attributes
in the
logical domain related to beaming.</desc>
<attList>
<attDef ident="beam.group" usage="opt">
<desc xml:lang="en">Provides an example of how automated beaming (including secondary beams) is to be
performed.</desc>
<datatype>
<rng:data type="string"/>
</datatype>
</attDef>
<attDef ident="beam.rests" usage="opt">
<desc xml:lang="en">Indicates whether automatically-drawn beams should include rests shorter than a
quarter note duration.</desc>
</attDef>
</attList>
<remarks xml:lang="en">
<p>The <att>beam.group</att> attribute can be used to set a default beaming pattern to be used
when no beaming is indicated at the event level. <att>beam.group</att> must contain a
comma-separated list of time values that add up to a measure,
<abbr>e.g.</abbr>, in 4/4 time '4,4,4,4'
indicates each quarter note worth of shorter notes would be beamed together. Parentheses
can
be used to indicate sub-groupings of secondary beams. For example, '(4.,4.,4.)' in
9/8 meter
indicates one outer beam per measure with secondary beams broken at each dotted quarter
duration, while a measure of 16th notes in 4/4 with <att>beam.group</att> equal to
'(4,4),(4,4)' will result in a primary beam covering all the notes and secondary beams
for
each group of 4 notes. This beaming "directive" can be overridden by using <gi scheme="MEI">beam</gi> elements. If neither <gi scheme="MEI">beam</gi> elements or the
<att>beam.group</att> attribute is used, then no beaming is rendered. Beaming can be
explicitly 'turned off' by setting <att>beam.group</att> to an empty string.</p>
</remarks>
</classSpec>