title: Where is the filterscript documentation (and how can I use it)?
body: <p>When Jelly Bean 4.2 was announced a month ago, Filterscript was also announced.  It appears to be a language that is a subscript of Renderscript with a different file extension.  And that's about all I know about the language.</p>
  
  <p>I have read the two total paragraphs that exist about Filterscript on the entire Internet and created a small <code>.fs</code> file with <code>pragma rs_fp_relaxed</code>, but it does not get picked up by the ADT builders like a normal <code>.rs</code> file is in the same location.</p>
  
  <p>My ADT is the latest public version (21.0.0), which seems to be too low for Filterscript.  <a href="http://tools.android.com/" rel="noreferrer">tools.android.com</a> appears to have 21.0.1 Preview, but there is no mention of Filterscript in the release notes (in fact its just a bugfix release).  There's just no documentation anywhere!</p>
  
  <p>How can I use Filterscript?  Where is its documentation?</p>
  
  <p>What I have tried:</p>
  
  <p><a href="https://www.google.com/search?q=filterscript+site:android.com&amp;tbs=li:1" rel="noreferrer">https://www.google.com/search?q=filterscript+site:android.com&amp;tbs=li:1</a></p>
  
  <p><a href="http://developer.android.com/about/versions/android-4.2.html#Renderscript" rel="noreferrer">http://developer.android.com/about/versions/android-4.2.html#Renderscript</a></p>
  
  <p><a href="http://developer.android.com/tools/sdk/eclipse-adt.html#notes" rel="noreferrer">http://developer.android.com/tools/sdk/eclipse-adt.html#notes</a></p>
  
  <p><a href="http://tools.android.com/recent/2101preview1" rel="noreferrer">http://tools.android.com/recent/2101preview1</a></p>