MediaWiki:Common.js

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• Firefox / Safari: Hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (⌘-R on a Mac)
• Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
• Internet Explorer / Edge: Hold Ctrl while clicking Refresh, or press Ctrl-F5
• Opera: Go to Menu → Settings (Opera → Preferences on a Mac) and then to Privacy & security → Clear browsing data → Cached images and files.

/* Any JavaScript here will be loaded for all users on every page load. */
<form>
<input type="button" value="Back to Previous Page" 
onClick="javascript: history.go(-1)">
</form>
<script async src="https://www.googletagmanager.com/gtag/js?id=G-YEV43L6CBH"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-YEV43L6CBH');
</script>