$standalone
$standalone :
Does the definition work by itself, or is it created solely for the purpose of merging into another definition?
Structure that stores an HTML element definition. Used by HTMLPurifier_HTMLDefinition and HTMLPurifier_HTMLModule.
mergeIn(\HTMLPurifier_ElementDef $def)
Merges the values of another element definition into this one.
Values from the new element def take precedence if a value is not mergeable.
| \HTMLPurifier_ElementDef | $def |