## General Metadata
```php
-// The "library" is a definition of available tags/directives. It can be
+// The tag library is a definition of available tags/directives. It can be
// used to validate form definitions; to advise sysadmins; and (probably)
// to generate the $palette.
//
// Must NOT be required at runtime. Only required for administration.
//
// CONSIDER: Specifying non-conventional names for design/props variants
-$afformLibrary = [
+$afformTags = [
'afl-entity' =>[
'attrs' => ['entity-name', 'matching-rule', 'assigned-values'],
],