OptionalallowedThe array of category names that a type allows, or true if any category is allowed.
If empty or false then categories aren't allowed.
OptionalallowedThe array of option names that a type allows, or true if any option is allowed.
If empty or false then options aren't allowed.
OptionalallowedThe array of styles that a type allows, or true if any style is allowed.
If empty or false then no styles are allowed.
OptionalisIf true then style is always required and options and categories requirements are ignored.
OptionalrequiredThe array of categories that are required, or true if at least one category is required.
Requirements imposed on a type by allowTypes.