LilyPond Internals Reference: 3.2.1 accidental-interface

### 3.2.1 `accidental-interface`

A single accidental.

#### User settable properties:

`alteration` (number)

  Alteration numbers for accidental.

`alteration-glyph-name-alist` (association list (list of pairs))

  An alist of key-string pairs.

`avoid-slur` (symbol)

  Method of handling slur collisions. Choices are `inside`, `outside`, `around`, and `ignore`. `inside` adjusts the slur if needed to keep the grob inside the slur. `outside` moves the grob vertically to the outside of the slur. `around` moves the grob vertically to the outside of the slur only if there is a collision. `ignore` does not move either. In grobs whose notational significance depends on vertical position (such as accidentals, clefs, etc.), `outside` and `around` behave like `ignore`.

`glyph-name` (string)

  The glyph name within the font.

  In the context of (span) bar lines, glyph-name represents a processed form of `glyph`, where decisions about line breaking, etc., are already taken.

`hide-tied-accidental-after-break` (boolean)

  If set, an accidental that appears on a tied note after a line break will not be displayed.

`restore-first` (boolean)

  Print a natural before the accidental.

#### Internal properties:

`forced` (boolean)

  Manually forced accidental.

`tie` (graphical (layout) object)

  A pointer to a `Tie` object.

This grob interface is used in the following graphical object(s): `Accidental`, `AccidentalCautionary`, `AccidentalSuggestion`, `AmbitusAccidental` and `TrillPitchAccidental`.

#### LilyPond – Internals Reference v2.24.4 (stable-branch).