# Variables for "Rougail" > 🛈 Informations > **rougail** > `standard` ## A dynamic family > 🛈 Informations > **rougail.dyn*a***
**rougail.dyn*b*** > This family builds families dynamically. > `standard` > **Identifiers**:
- a
- b | Variable                                                                                                   | Description                                                                                                | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | **rougail.dyn*a*.var**
**rougail.dyn*b*.var**
[`string`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `standard` `mandatory` | A variable inside dynamic family.
**Default**: val |