LilyPond Internals Reference: 3.1.18 BassFigureLine

### 3.1.18 BassFigureLine

BassFigureLine objects are created by: Figured_bass_engraver.

Standard settings:

> `axes` (list):

>   `'(1)`

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

> `vertical-skylines` (pair of skylines):

>   `ly:axis-group-interface::calc-skylines`

>   Two skylines, one above and one below this grob.

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

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

>   Hard coded extent in Y direction.

This object supports the following interface(s): axis-group-interface, grob-interface and spanner-interface.

#### Internals Reference