5.3.1 <al-require>

##
5.3.1 `<al-require>`

This tag is used to specify the minimum version of the Albatross templating system that will correctly parse your template, or to specify templating features (that may be implemented by extension modules) that are required to parse your template.

If the templating system has a lower version number, or the extension feature is not available, an `ApplicationError` Exception is raised when the template is parsed.