A links mode 'page' is not really a page at all. The only fields used are the menu entry and the body text. The menu entry specifies the text to appear in the menu, as normal. The body text specifies the link destination. This should either be a fully qualified URL - ie a web address that starts with http:// or https:// - or an internal link, which is specified in the same way as for links within formatted text (though without the surrounding <>). So, for example
home:1
would link to the Carrelet homepage (assuming that your account is under the carrelet.net domain).