2. Rightful Author
In most circumstances, the map must originally be by you. However if the following conditions apply, you may submit an edited version of someone else's map:
- If you are editing an existing map by someone else you must request permission to create your own version. If the author cannot be reached or does not reply, you have permission to edit the map. However, if the author ever replies or comes back, he/she may request your map to be taken down.
- If the author has made it open source, you may upload your radically edited version of the map.
- The map does not contain any license or message from the author denying you from submitting a version of the map.
- In all cases, you must give credit to the original author.