Interchange component class describing configuration directives.
$deprecatedVersion
Version of HTML Purifier this directive was deprecated.
$external
List of external projects this directive depends on, e.g.
$allowed
Lookup table of allowed scalar values.
$default
Default value, e.g.
$aliases
List of aliases for the directive.
$description
HTML description.
$typeAllowsNull
Whether or not null is allowed as a value.
$version
Version of HTML Purifier the directive was introduced, e.g.
$valueAliases
Hash of value aliases, e.g.
$deprecatedUse
ID of directive that supercedes this old directive.