The sanctuary spell says that one can reopen the door at any point along the wall up to 20 feet from the original doorway. Does that refer to the dimensions inside the room (e.g if it was shaped and now is longer than 20') or also outside, in the physical world, i.e. can I use the spell to cross a river or move through a wall? That would open up an immense number of useful applications for the spell .. and make way too powerful imho.