title: Where is the documentation for _()?
body: <p>I tried to create a new function and call it _(), but it turns out there already is one. However, i'm unable to find any documentation about it since it's not in the list of magic methods, Google ignores my bracket/underscore combination, php.net returns nothing, trying to guess <code>http://www.php.net/manual/en/function._.php</code> didn't work...</p>
  
  <p>Does it have a name? How do i find it? </p>