I started a new page on the guide: under Advanced Topic(1), a page devoted to Regular expressions(2). The Status(3) page was also updated
(1) http://wiki.openoffice.org/wiki/Documentation/UserGuide/Advanced (2) http://wiki.openoffice.org/wiki/Documentation/UserGuide/Advanced/RegExp (3) http://wiki.openoffice.org/wiki/Documentation/UserGuide/Status Feel free to improve it. At the moment, it's only the general introduction and thus some text indicating how to use RegExp on each AOO component is still missing. Regards Ricardo