Rubric - METAL
Macro Extension Template Attribute Language
Macros provide a way to define a chunk of presentation in one template, and share it in others, so that changes to the macro are immediately reflected in all of the places that share it.
METAL statements are:
| define-macro | to define a macro |
| use-macro | to use a macro |
| define-slot | to define a macro customization point |
| fill-slot | to customize a macro |
