Pages in the mojoPortal content management system menus are what we call CMS pages, they are the main pages of the site. Sometimes you may wish to create a link in the menu that links to a different site, or you may have a CMS page in your site that you would like to appear in more than one place in the menu.
The same technique is used for both scenarios. When you create a new CMS page, by default it will suggest an url in the format ~/page-name.aspx, but you can override this by editing it. So, if you wanted to link to google from the menu for example, you could edit the url and make it a fully qualified url like:
For linking a CMS page in more than one place in the menu you do the same thing. First you create the real page with the standard url ~/whatever-you-name-it.aspx. Then you can create additional page(s) at different places in the menu hierarchy that point to http://yoursiteroot/whatever-you-name-it.aspx
The real page can only really have one parent page so when the user clicks the link and visits the page the menu will be selected/highlighted for the real parent page path. But they can access that link from multiple places in the menu.