Extensions can be selected from the Search menu, from the drop-down menu with the icon.One extension is included in the download version of cattaDoc, Search for document version, which can be used to find a document version in the cattaDoc document repository identical to a document available on your local disk system, e.g. if you are unsure that you have the correct document version on your own disk or you need to download it from cattaDoc:
This could result in the following:
More extensions have been developed, e.g. a timesheet extension and a mileage record extension. They are both closely linked to other objects and registrations in cattaDoc, but probably need a little more generalisation before they are usable for others.