LilyPond Internals Reference: 3.2.8 balloon-interface

### 3.2.8 balloon-interface

A collection of routines to put text balloons around an object.

#### User settable properties:

> `annotation-balloon` (boolean)

>   Print the balloon around an annotation.

> `annotation-line` (boolean)

>   Print the line from an annotation to the grob that it annotates.

> `padding` (dimension, in staff space)

>   Add this much extra space between objects that are next to each other.

> `text` (markup)

>   Text markup. See Formatting text.

#### Internal properties:

> `spanner-placement` (direction)

>   The place of an annotation on a spanner. LEFT is for the first spanner, and RIGHT is for the last. CENTER will place it on the broken spanner that falls closest to the center of the length of the entire spanner, although this behavior is unpredictable in situations with lots of rhythmic diversity. For predictable results, use LEFT and RIGHT.

This grob interface is used in the following graphical object(s): BalloonTextItem, FootnoteItem and FootnoteSpanner.

#### Internals Reference