.w3.org/TR/shacl-af/#dfn-shacl-rules">rule</a></dfn>,
				<dfn data-lt="functions|SHACL functions"><a href="https://www.w3.org/TR/shacl-af/#dfn-shacl-functions">SHACL function</a></dfn>.
			</p>
		</section>
			
		<section id="introduction">
			<h2>Introduction</h2>
			<p>
				The Shapes Constraint Language (SHACL) [[!shacl]] is a language for validating <a>RDF graphs</a> against a set of conditions.
				These conditions are provided as <a>shapes</a> and other constructs expressed in the form of an RDF grap