Open selection
Availability
[SINCE Orbeon Forms 2016.1]
What it does
The fr:open-select1 component presents:
a list of radio buttons predefined by the form author
and a custom choice ("Other") which the user has the option to specify instead

Usage
You use fr:open-select1 like a regular xf:select1 control:
Advanced usage
fr:open-select1 supports the following attributes:
appearancefull: shows radio buttons (the default)minimal: shows a dropdown menu
This is the control with the minimal appearance:

Data format
The predefined radio buttons have a label and a value, and, like all radio buttons, store their value into the data.
The text of the custom choice entered by the user is saved directly into the data.