360 image interactions: variables & trigger

Suggested: add built-in variables to Storyline for 360 interactions, such as "total number of hotspots and markers in this interaction", which we could test for to control things like the Next button. For each interaction, ideally have a Markername.Visited Boolean. (Yes, I'm trying to get you to create an object-oriented scripting language.)

Add a trigger to rotate the camera to point at a marker or hotspot, which would let me have a custom Next button that points to the next thing the learner is meant to see, rather than the next slide, except that after all markers/hotspots have been visited, that same button takes the learner to the next room or spot. This is not difficult to do in JavaScript, but it would be enormously easier if the function was directly supported in Storyline.