Thread:Project:Support desk/Modifying Special:UserLogin

I would like to edit this page, to add - at least a link - to a "Registration Agreement" Page, although I would prefer to include the text itself. I can delete users and pages for inappropriate content - but I would prefer to have an agreement in advance.

When I enter Special:UserLogin and then press search I get a link that says the page exists but rather than getting something I can potentially edit - I just get the UserLogin page - ready to log me in (again).

Maybe the page is protected. I looked for that and the only thing I could find mentions a "Vector" and the "Protect Page" link there. Where is the "Vector" Link/Menu?

regards, Michael