### 3.1.60 LaissezVibrerTieColumn

LaissezVibrerTieColumn objects are created by: Laissez_vibrer_engraver.

Standard settings:

> `head-direction` (direction):

>   `ly:semi-tie-column::calc-head-direction`

>   Are the note heads left or right in a semitie?

> `X-extent` (pair of numbers)

>   Extent (size) in the X direction, measured in staff-space units, relative to object’s reference point.

> `Y-extent` (pair of numbers)

>   Extent (size) in the Y direction, measured in staff-space units, relative to object’s reference point.

This object supports the following interface(s): grob-interface, item-interface and semi-tie-column-interface.

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