LilyPond program-reference: 3.1.74 PaperColumn

### 3.1.74 PaperColumn

PaperColumn objects are created by: Paper_column_engraver.

Standard settings:

> `axes` (list):

>   `'(0)`

>   List of axis numbers. In the case of alignment grobs, this should contain only one number.

> `allow-loose-spacing` (boolean):

>   `#t`

>   If set, column can be detached from main spacing.

> `before-line-breaking` (boolean):

>   `ly:paper-column::before-line-breaking`

>   Dummy property, used to trigger a callback function.

> `horizontal-skylines` (unknown):

>   `ly:separation-item::calc-skylines`

>   Two skylines, one to the left and one to the right of this grob.

> `X-extent` (pair of numbers):

>   `ly:axis-group-interface::width`

>   Hard coded extent in X direction.

This object supports the following interface(s): spaceable-grob-interface, separation-item-interface, paper-column-interface, item-interface, font-interface, axis-group-interface and grob-interface.

#### Internals Reference