Internal backend properties
accidental-grob (layout object)- Accidental for this note.
accidental-grobs (list)- Alist with (NOTENAME . GROBLIST) entries
add-cauda (boolean)- does this flexa require an additional cauda on the left side?
add-join (boolean)- is this ligature head joined with the next one by a vertical line?
add-stem (boolean)- is this ligature head a virga and therefore needs an additional stem on the right side?
adjacent-hairpins (unknown)- List of directly neighboring hairpins
all-elements (unknown)- list of all grobs in this line. Its
function is to protect objects from being garbage collected.
arpeggio (layout object)- pointer to arpeggio object.
ascendens (boolean)- is this neume of an ascending type?
auctum (boolean)- is this neume liquescentically augmented?
axis-group-parent-X (layout object)- Containing X axis group
axis-group-parent-Y (layout object)- Containing Y axis group
bars (unknown)- list of bar line pointers.
beam (layout object)- pointer to the beam, if applicable.
begin-of-line-visible (boolean)- Used for marking ChordNames that should only show changes.
bounded-by-me (unknown)- list of spanners that have this
column as start/begin point. Only columns that have grobs or act as
bounds are spaced.
bracket (layout object)- the bracket for a number.
cached-pure-extents (vector)- Used by a VerticalAxisGroup to cache the Y-extents of different column ranges.
cause (any type)- Any kind of causation objects (i.e. music, or perhaps translator) that was the cause for this grob.
cavum (boolean)- is this neume outlined?
circled-tip (boolean)- Put a circle at start/end of hairpins (al/del niente)
columns (unknown)- list of grobs, typically containing
paper-columns or note-column objects.
common-refpoint-of-elements (layout object)- Caches the common_refpoint_of_array of the elements grob-set
conditional-elements (unknown)- Internal use only
context-info (integer)- Within a ligature, the final glyph or shape of a head may be affected by the left and/or right neighbour head. context-info holds for each head such information about the left and right neighbour, encoded as a bit mask.
delta-position (number)- vertical position difference
deminutum (boolean)- is this neume deminished?
descendens (boolean)- is this neume of a descendent type?
details (list)- alist of parameters for detailed grob behavior.
more information on the allowed parameters can be found by inspecting
lily/slur-scoring.cc, lily/beam-quanting.cc, and
lily/tie-formatting-problem.cc. Setting debug-tie-scoring,
debug-beam-scoring or debug-slur-scoring also provides
useful clues.
direction-source (layout object)- in case side-relative-direction is
set, which grob to get the direction from .
dot (layout object)- reference to Dots object.
dots (unknown)- multiple Dots objects.
elements (unknown)- list of grobs, type depending on the Grob
where this is set in.
encompass-objects (unknown)- Objects that a slur should avoid
in addition to notes and stems.
figures (unknown)- Figured bass objects for continuation line.
flexa-height (dimension, in staff space)- height of a flexa shape in a ligature grob in staff_space.
flexa-width (dimension, in staff space)- width of a flexa shape in a ligature grob in staff_space.
font (font metric)- Cached font metric object
glyph-name (string)- a name of character within font.
grace-spacing (layout object)- a run of grace notes.
head-width (dimension, in staff space)- width of this ligature head
heads (unknown)- List of note heads.
ideal-distances (list)- (obj . (dist . strength)) pairs.
important-column-ranks (vector)- Cache of columns that contain items-worth-living.
inclinatum (boolean)- is this neume an inclinatum?
interfaces (list)- list of symbols indicating the interfaces supported by this object. Is initialized from the
meta field.
items-worth-living (unknown)- A list of interesting items. If
empty in a particular staff, then that staff is erased.
join-heads (boolean)- Whether to join the note heads of an ambitus grob with a vertical line.
join-right-amount (number)
least-squares-dy (number)- ideal beam slope, without damping.
left-items (unknown)
left-neighbors (unknown)- List of
spacing-wish grobs that are close to the current column.
The closest spacing-wishes determine the actual distances between the
columns.
linea (boolean)- attach vertical lines to this neume?
meta (list)- Contains meta information. It is an alist with the
entries
name and interfaces.
minimum-distances (list)- list of rods, that have the format (obj . dist).
note-columns (pair)- list of NoteColumn grobs.
note-head (layout object)- A single note head
note-heads (unknown)- List of note head grobs
oriscus (boolean)- is this neume an oriscus?
pedal-text (layout object)- Pointer to the text of a mixed-style piano pedal.
pes-or-flexa (boolean)- shall this neume be joined with the previous head?
positioning-done (boolean)- Used to signal that a positioning element
did its job. This ensures that a positioning is only done once.
prefix-set (number)- a bit mask that holds all Gregorian head prefixes, such as
\virga or \quilisma
primitive (integer)- Pointer to a ligature primitive, i.e. an item similar to a note head that is part of a ligature.
pure-Y-extent (pair of numbers)- The estimated height of a system
pure-relevant-elements (unknown)- The subset of elements that are relevant for finding the pure-Y-extent.
quant-score (string)- Beam quanting score – can be stored for
debugging
quantize-position (boolean)- If set, a vertical alignment is aligned to be within staff spaces.
quantized-positions (pair of numbers)- Beam positions after quanting.
quilisma (boolean)- is this neume a quilisma?
rest (layout object)- the staff symbol grob that we're in.
rest-collision (layout object)- rest collision that a rest is in.
rests (unknown)- A list of rest objects.
right-items (unknown)
right-neighbors (unknown)- see left-neighbors
script-stencil (pair)- Pair (
type . arg), which
acts as an index for looking up a Stencil object.
separation-item (layout object)- A separation item.
shorten (dimension, in staff space)- The amount of space that a
stem. Internally used to distribute beam shortening over stems.
side-support-elements (unknown)- the support, a list of grobs.
slur (layout object)- A pointer to a slur object
spaceable-staves (unknown)- Objects to be spaced during page layout.
spacing (layout object)- the spacing spanner governing this section.
spacing-wishes (unknown)- List of note spacing or staff spacing objects.
staff-symbol (layout object)- the staff symbol grob that we're in.
stem (layout object)- pointer to Stem object.
stem-info (pair)- caching of stem parameters
stems (unknown)- list of stem objects, corresponding to the notes that the arpeggio has to be before.
stropha (boolean)- Is this neume a stropha?
tie (layout object)
tremolo-flag (layout object)- The tremolo object on a stem.
tuplet-number (layout object)- the number for a bracket.
tuplets (unknown)- list of smaller tuplet brackets
use-breve-rest (boolean)- Use breve rests for measures longer
than a whole rest.
virga (boolean)- Is this neume a virga?
x-offset (dimension, in staff space)- Extra horizontal offset for ligature heads.