### 3.2.36 font-interface

Any symbol that is typeset through fixed sets of glyphs, (i.e., fonts).

#### User settable properties:

> `font-encoding` (symbol)

>   The font encoding is the broadest category for selecting a font. Currently, only lilypond’s system fonts (Emmentaler) are using this property. Available values are `fetaMusic` (Emmentaler), `fetaBraces`, `fetaText` (Emmentaler).

> `font-family` (symbol)

>   The font family is the broadest category for selecting text fonts. Options include: `sans`, `roman`.

> `font-name` (string)

>   Specifies a file name (without extension) of the font to load. This setting overrides selection using `font-family`, `font-series` and `font-shape`.

> `font-series` (symbol)

>   Select the series of a font. Choices include `medium`, `bold`, `bold-narrow`, etc.

> `font-shape` (symbol)

>   Select the shape of a font. Choices include `upright`, `italic`, `caps`.

> `font-size` (number)

>   The font size, compared to the ‘normal’ size. `0` is style-sheet’s normal size, `-1` is smaller, `+1` is bigger. Each step of 1 is approximately 12% larger; 6 steps are exactly a factor 2 larger. Fractional values are allowed.

#### Internal properties:

> `font` (font metric)

>   A cached font metric object.

This grob interface is used in the following graphical object(s): Accidental, AccidentalCautionary, AccidentalSuggestion, AmbitusAccidental, AmbitusLine, AmbitusNoteHead, Arpeggio, BalloonTextItem, BarLine, BarNumber, BassFigure, Beam, BreathingSign, ChordName, Clef, ClefModifier, CombineTextScript, CueClef, CueEndClef, Custos, Dots, DoublePercentRepeat, DoublePercentRepeatCounter, DoubleRepeatSlash, DynamicText, DynamicTextSpanner, Episema, Fingering, Flag, FootnoteItem, FootnoteSpanner, FretBoard, InstrumentName, InstrumentSwitch, KeyCancellation, KeySignature, KievanLigature, LyricHyphen, LyricText, MeasureCounter, MensuralLigature, MetronomeMark, MultiMeasureRest, MultiMeasureRestNumber, MultiMeasureRestText, NonMusicalPaperColumn, NoteHead, NoteName, OttavaBracket, PaperColumn, ParenthesesItem, PercentRepeat, PercentRepeatCounter, RehearsalMark, Rest, Script, SostenutoPedal, SpanBar, StanzaNumber, StringNumber, StrokeFinger, SustainPedal, SystemStartBrace, SystemStartBracket, SystemStartSquare, TabNoteHead, TextScript, TextSpanner, TimeSignature, TrillPitchAccidental, TrillPitchGroup, TrillPitchHead, TrillSpanner, TupletNumber, UnaCordaPedal, VaticanaLigature and VoltaBracket.

#### Internals Reference v2.18.2 (稳定分支).