In an approach for generating a file, a computer provides a selection window associated with a second file, wherein the selection window is at least partially transparent and at least partially overlays an opened first file. The computer identifies content within the opened first file that is overlaid by the provided selection window associated with the second file. The computer transfers a copy of the identified content within the opened first file that is overlaid by the provided selection window associated with the second file, wherein the opened first file does not incorporate changes that are made within the second file.