### 3.2.23 custos-interface

A custos object. `style` can have four valid values: `mensural`, `vaticana`, `medicaea`, and `hufnagel`. `mensural` is the default style.

#### User settable properties:

> `style` (symbol)

>   This setting determines in what style a grob is typeset. Valid choices depend on the `stencil` callback reading this property.

> `neutral-position` (number)

>   Position (in half staff spaces) where to flip the direction of custos stem.

> `neutral-direction` (direction)

>   Which direction to take in the center of the staff.

This grob interface is used in the following graphical object(s): Custos.

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