| Variable                                                                                                                                                        | Description                                                                          |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------|
| **<a id="variable" name="variable">variable</a>**<br/>[`choice`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `standard` `mandatory` | A variable.<br/>**Choices**: <br/>•&nbsp;a<br/>•&nbsp;b<br/>•&nbsp;c **← (default)** |