Dear list, on http://www.pragma-ade.com/general/manuals/interaction.pdf#page=40, it is announced that there are buttons that change once clicked (using AcroJS, I guess). There are to be explained on chapter “13. Widgets“ (www.pragma-ade.com/general/manuals/interaction.pdf#page=46), but it has to be composed yet. If I have the following two buttons: \goto{0}[JS(Play{})]% \goto{1}[JS(Pause{})]% How could I merge them into one, so that pressing on it switches between 0 and 1? Many thanks for your help, Pablo -- http://www.ousia.tk