Use the Tampermonkey tag unless you are specifically targeting GM4 or later. .. Greasemonkey is a, now mostly busted, Firefox extension which allows you to run javascript code on specific web pages.

Greasemonkey was a userscript manager for Firefox. With the release of version 4, it is now severely crippled and Greasemonkey recommends that you use some other engine.

Most scripts should now use the tag, even if they target Violentmonkey or versions of Greasemonkey prior to GM4.

Code Language (used for syntax highlighting): lang-js