`https://rougail.readthedocs.io/en/latest/variable.html#variables-types[string]` `standard` `mandatory` | A first variable with __val1__, __val2__ or __+++val3+++__. +
**Default**: the value of the identifier.
| **+++__val3___dyn.var2+++** +
**__val1___dyn.var2** +
**__val2___dyn.var2** +
`https://rougail.readthedocs.io/en/latest/variable.html#variables-types[string]` `standard` `mandatory` | A second variable. +