LilyPond program-reference: 3.2.57 melody-spanner-interface

### 3.2.57 melody-spanner-interface

Context dependent typesetting decisions.

#### User settable properties:

> `neutral-direction` (direction)

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

#### Internal properties:

> `stems` (unknown)

>   A list of stem objects, corresponding to the notes that the arpeggio has to be before.

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

#### Internals Reference