Are all constraints inherited? #1096

	<section id="superclassrole">
		<h3>Superclass Role</h3>
		<p>The <a>role</a> that the current subclassed role extends in the Roles Model. This extension causes all the properties and constraints of the superclass role to propagate to the subclass role. Other than well known stable specifications, inheritance may be restricted to items defined inside this specification, so that external items cannot be changed and affect inherited <a>classes</a>.</p>
	</section>