Include an option to link an external javascript file to a Captivate project. In Cp 12 in particular such a link would be good in the "Project properties" under PUBLISH SETTINGS. An external js file would allow a sophisticated use of moderrn JS within a project. It would also go along well with the concept of ADD JAVASCRIPT CODE TO THE PUBLISHED HTML AT RUNTIME, formulated on https://helpx.adobe.com/uk/captivate/help/javascript-interface-adobe-captivate.html.