That looks like a great feature and I'm looking forward to using it. However, it is a bit simple for the moment, so some adjustments would be more than welcome.
Please make the coordinate correction optional and please allow CO to encode a message/spoiler photo.
To give you an example: I own a mystery with a long puzzle to solve, but over time the ground zero has changed (new parking lot has been built where the cache used to be). Changing the puzzle would be too complicated and not worth the effort... I could have archived the cache, but better option was just to leave a message in the checker with the new set coordinates. Automatic coordinates would incite a mistake, because puzzle solution is not final coordinates of the box in this case.
Also please consider changing the graphical layout of the checker that is not very attractive for the moment (could it be centered? smaller or bigger? etc)
Thanks, great job
