I noticed that Pages 5 uses a new weird file format, it is a bundle again (not a zipped one like in Pages 4), in this folder is a zip archive which includes a b

I noticed that Pages 5 uses a new weird file format, it is a bundle again (not a zipped one like in Pages 4), in this folder is a zip archive which includes a bundle again. I really wonder comes up with those formats and ideas. You almost wished that Apple had made ooXML the standard file format for Pages 5.