Backer 1.4 - is a shareware Control Panel for Macintosh that performs automatic backup copies of your documents. It's easy to use and requires very little memory to install. Each time you modify a document, a backup copy is created in a folder at the same level as the document you are working with. Backer can now save all the copies in a single folder which can be located on an external volume. Now you can specify any number of security copies.