I've fixed the posts above, which were not displaying properly in the current version of the forum software.
Filter patterns go in Preferences / Folders / Global Filters if you want them to apply to all folders, or into folder formats (Preferences / Folders / Folder Formats) if you only want them to apply to certain folders.
The general option for hiding "hidden" files (i.e. files with the H attribute set) is another option, and has less performance overhead, but obviously hides more than just the Office temp files.
Whichever method or option is used, clicking the hidden count on the status bar will unhide things.