<pad>An indication of extra visual space between notational elements.
<rest>A non-sounding event found in the source being transcribed.
<space>A placeholder used to fill an incomplete measure, layer, etc. most often so that the
combined duration of the events equals the number of beats in the measure.
(MEI.shared) Groups event elements that occur in all notational repertoires.
<beam>A container for a series of explicitly beamed events that begins and ends entirely
within
a measure.
<graceGrp>A container for a sequence of grace notes.
<ligature>A mensural notation symbol that combines two or more notes into a single sign.
<tuplet>A group of notes with "irregular" (sometimes called "irrational") rhythmic values,
for
example, three notes in the time normally occupied by two or nine in the time of five.
(MEI.shared) Groups notated events that may appear at the layer level in all repertoires.
<abbr>A generic element for 1) a shortened form of a word, including an acronym
or 2) a shorthand notation.
<corr>Contains the correct form of an apparent erroneous passage.
<damage>Contains an area of damage to the physical medium.
<del>Contains information deleted, marked as deleted, or otherwise indicated as
superfluous or spurious in the copy text by an author, scribe, annotator, or corrector.
<layer>An independent stream of events on a staff.
<lem>Contains the lemma, or base text, of a textual variation.
<oLayer>A layer that contains an alternative to material in another layer.
<orig>Contains material which is marked as following the original, rather than
being normalized or corrected.
<rdg>Contains a single reading within a textual variation.
<reg>Contains material which has been regularized or normalized in some
sense.
<restore>Indicates restoration of material to an earlier state by cancellation of an editorial
or
authorial marking or instruction.
<sic>Contains apparently incorrect or inaccurate material.
<supplied>Contains material supplied by the transcriber or editor for any reason.
<unclear>Contains material that cannot be transcribed with certainty because it is illegible
or
inaudible in the source.
Common Music Notation (CMN) repertoire component declarations.
<beam>A container for a series of explicitly beamed events that begins and ends entirely
within
a measure.
<graceGrp>A container for a sequence of grace notes.
<oLayer>A layer that contains an alternative to material in another layer.
<tuplet>A group of notes with "irregular" (sometimes called "irrational") rhythmic values,
for
example, three notes in the time normally occupied by two or nine in the time of five.
Critical apparatus component declarations.
<lem>Contains the lemma, or base text, of a textual variation.
<rdg>Contains a single reading within a textual variation.
Editorial and transcriptional component declarations.
<abbr>A generic element for 1) a shortened form of a word, including an acronym
or 2) a shorthand notation.
<corr>Contains the correct form of an apparent erroneous passage.
<damage>Contains an area of damage to the physical medium.
<del>Contains information deleted, marked as deleted, or otherwise indicated as
superfluous or spurious in the copy text by an author, scribe, annotator, or corrector.