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<a accesskey="1" href="page.php?w=Planning_Domain_Definition_Language&amp;p=3">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Planning_Domain_Definition_Language&amp;p=5">3.Next</a>
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<p>a sequence of actions, some of which may be executed in parallel.</p>

<p>The PDDL language was inspired by the <a href="page.php?w=Stanford_Research_Institute_Problem_Solver">Stanford Research Institute Problem Solver</a> (STRIPS) and the <a href="page.php?w=Action_description_language">Action description language</a> (ADL), among others. The PDDL language uses principles from <a href="page.php?w=knowledge_representation">knowledge representation</a> languages which are used to author <a href="page.php?w=Ontology_%28information_science%29">ontologies</a>,</p><p>
<a accesskey="1" href="page.php?w=Planning_Domain_Definition_Language&amp;p=3">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Planning_Domain_Definition_Language&amp;p=5">3.Next</a>
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