### 2.2.73 Multi_measure_rest_engraver

Engrave multi-measure rests that are produced with ‘`R`’. It reads `measurePosition` and `internalBarNumber` to determine what number to print over the MultiMeasureRest.

Music types accepted:

multi-measure-rest-event and multi-measure-text-event

Properties (read)

> `currentCommandColumn` (graphical (layout) object)

>   Grob that is X-parent to all current breakable (clef, key signature, etc.) items.

> `internalBarNumber` (integer)

>   Contains the current barnumber. This property is used for internal timekeeping, among others by the `Accidental_engraver`.

> `measurePosition` (moment)

>   How much of the current measure have we had. This can be set manually to create incomplete measures.

> `restNumberThreshold` (number)

>   If a multimeasure rest has more measures than this, a number is printed.

This engraver creates the following layout object(s):

MultiMeasureRest, MultiMeasureRestNumber and MultiMeasureRestText.

`Multi_measure_rest_engraver` is part of the following context(s): CueVoice, DrumVoice, GregorianTranscriptionVoice, KievanVoice, MensuralVoice, PetrucciVoice, TabVoice, VaticanaVoice and Voice.

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