The green link below will open the PDDL Online Editor so that you can see an example of the PDDL Syntax Highlighting. It was created with the Ace code editor. Simply paste in your code or write a new domain or problem from scratch. Although it is a fully functional code editor, myPDDL has many additional features.
Important: The editor could take some time to load. However, if it is still not loaded after a longer period of time, please refresh the editor page and make sure that JavaScript is enabled in your browser.