Board Thread:Support Requests - Getting Started/@comment-45631250-20200604040712/@comment-9605025-20200604041944

Special pages are not like other pages; you can't just make one. A true special page must interact with the backend software in ways that you would not be able to set-up due to Fandom's restrictions. So creating a true Special page is not even possible. Some custom JS scripts set-up fake special pages by detecting the page name and replacing the content for certain pages. However, all of that needs to be done by the JS; there is nothing that can be put on the page. To that end, there is CreateSpecialPage which you can use from a custom JS script to help create a fake special page. Some users think it is fine to create fake special pages with names like "Special:MySpecialPage" while others believe it is better to create them as subpages of "Special:BlankPage". "Special:BlankPage" is an actual special page intended to be used for this purpose. - Edit:

What is it you are trying to do that requires a custom special page?