LilyPond Internals Reference: 2.2.5 Axis_group_engraver

### 2.2.5 Axis_group_engraver

Group all objects created in this context in a `VerticalAxisGroup` spanner.

Properties (read)

> `currentCommandColumn` (graphical (layout) object)

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

This engraver creates the following layout object(s):

VerticalAxisGroup.

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

#### Internals Reference