LilyPond Internals Reference: 2.2.122 Time_signature_engraver

### 2.2.122 Time_signature_engraver

Create a TimeSignature whenever `timeSignatureFraction` changes.

Properties (read)

> `implicitTimeSignatureVisibility` (vector)

>   break visibility for the default time signature.

> `timeSignatureFraction` (pair of numbers)

>   A pair of numbers, signifying the time signature. For example, `#'(4 . 4)` is a 4/4 time signature.

This engraver creates the following layout object(s):

TimeSignature.

`Time_signature_engraver` is part of the following context(s): DrumStaff, GregorianTranscriptionStaff, MensuralStaff, RhythmicStaff, Staff and TabStaff.

#### Internals Reference