Show Zero
Every show has its own requirements and this inevitably means there are physical changes to the lighting. Any light might be moved, have its filters, its focus or direction altered.
Ideally, at the end of the show, the lights would be returned to their default position or "show 0". This rarely happens but we do have a read only file of show0 that has an execute window that includes all our lights, laid out at their expected locations. This does not include any directions, filter colours etc. but it is a way to identify the lights and where they are by just turning them on individually.
If you are setting a new show without any knowledge of the previous show, you should download show zero then move it into Magic Q's save folder so that it can be opened. The folder location may be different on different computers, but it you can find it in Magic Q on the blue bar at the top of Setup > File Manager