···6666`Literal::Value` is like a `Literal::Data`, but specifically designed to enrich a single value. You could wrap a `String` as an `EmailAddress` or an `Integer` as a `UserId`.
67676868```ruby
6969-EmailAddress = Literal::Value.define(String)
7070-UserID = Literal::Value.define(Integer)
6969+EmailAddress = Literal::Value(String)
7070+UserID = Literal::Value(Integer)
7171```
72727373We can create a new `UserID` like this: