File Kit allows you to compare two files, to see if they are identical or not. When you select this button, File Kit will prompt you for the two files and compare them. Note that the first part of the resource fork (first 256 bytes) are ignored. Apple system software stores information about the location and other attributes in this area, and two files that appear identical to the user and for all practical purposes are identical may have different information stored here.
To delete a file or folder, select its name in the main file list and hit the delete button. Deleting a folder deletes every file and folder contained within that folder. In any case, you will be asked if you really want to delete the file or folder because deleted files and folders cannot be recovered.