` :No, it is not. By using it on another wiki, do you mean for one user to use it, or for it to be enabled for the entire wiki? If the former, one could just add importScriptURI(``//en.wikipedia.org/w/index.php?title=User:Yair_rand/ReferenceTooltips.js&action;=raw&ctype;=text/javascript``);importStylesheetURI(``//en.wikipedia.org/w/index.php?action=raw&ctype;=text/css&title;=User%3AYair_rand%2FReferenceTooltips.css``); to their common.js on that wiki.   `