You can see the Event ID number of an event you are editing in the top bar of any Event Editor. In the example below you can see the ID of a fade event that has been opened in the FADE EDITOR. Every event has a unique ID which is recorded in the project XML created by the authoring tool. This is useful for troubleshooting purposes and something you can submit to us along with the XML of the project when encountering an issue you want to report.