Unregistered users are not allowed to have such pages.
You can make one if you log in or create an account.
 | This template is used in MediaWiki:Mycustomcssprotected, MediaWiki:Mycustomjsprotected, and MediaWiki:Mycustomjsonprotected. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid major disruption, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Please discuss changes on the talk page before implementing them. |
They are displayed when an IP tries to create a JavaScript, CSS or JSON page for their own IP address. This can for example happen if they click a link at Wikipedia:User scripts/List#Installation codes. Interface administrators are able to create such pages for IP addresses but it should not be done since others may use the same IP address. There is therefore no button to submit an edit request.
Usage:
{{Protected mycustom|pagetype}}