Usually url to a page will show a page from this website. However in some cases, there is a need to create page, that would actually send user to other website.
This is possible by using "Link to External URL" field on page editing screen.
Usually links to a page is created from a website menu only, but if there is a need to reference a page via <inp2:c_CategoryLink/> tag, then urls to external websites are not processed.
Ready for testing.