You can sort the files by type, creator, file name or category by clicking on one of the labels "Type", "Creator", "File Name", "Category". The label corresponding to the current sort is underlined. The "Category" label may not be present if the "Show Categories in Files Windows" is not checked in the preferences (this option was added because when you are editing rules, Tidy It Up ! must always reclassify all the files, refresh the screens, … which slows down Tidy It Up ! on slower macs).
