| Variable                                             | Description                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **<a id="variable" name="variable">variable</a>**<br/>`choice` `standard` `mandatory`                                                                                                                                                                                  | A variable.<br/>**Choices**: <br/>• a<br/>• b<br/>• c **← (default)**                                                                                                                                                                                   |