</B> are self-explanatory. Just have a look at the reference on data structure to understand clearly what are the Ev events. The most important thing is that there's only one scene at a same time in GeoMaestro. You can open many tools, but they will all work on the same scene. Any event selected in one tool will be selected in the others, etc... Note that when a tool is dumped (if you write a page which contains it), the events are dumped with it. So if you're working on several scenes, or with several tool