///|
pub using @spec {
  type Value,
  type Host,
  host,
  type Undefined,
  type Refused,
  trait Object,
  type Call,
  type Filter,
  type Test,
  type Func,
  escape,
  invalid,
  unknown,
}

///|
pub using @syntax {type Lang, type Reading, type Delimiters, delimiters}