There isn't a way to do this in the interface, but there are a few techniques you can use and also an API script that might be of use. 1) You can copy and paste groups of graphics, so it doesn't take long to build up a larger area by copy 1x1 into 2x2 into 4x4, etc. until you're copying a rather large area at a time. Click as close as you can to the center of where you want something to be pasted, then paste it, select it and snap adjust it to the right place. Repeat as needed. 2) API: I wrote a script called Tile which is in the repo and can be used to fill a large area very quickly. Once you have it installed, you just place an image on the map, then execute the command !tile-next-move and move that image to the other corner. The API script will create copies of the tile to fill the space. NOTE : It can only create images that are in your user library, not the MarketPlace. If you need to fill something from the MarketPlace, you'd need to download it and upload it to your user library first.
