title: What language types are allowed in the HTML script tag?
body: <p>I was looking at the <a href="http://www.w3.org/TR/REC-html40/interact/scripts.html" rel="noreferrer">W3C specs for the script tag</a>, and I noticed you can specify VBScript and TCL as a language type. This is extremely new to me; I've only ever seen Javascript used with the script tag.</p>
  
  <p>Why aren't other languages more commonly used, and is there a complete list of languages you can use within this tag?</p>