The source I cited was what came up when I Googled the code reference you left for me.  That is what it took me too so I posted it and highlighted it for you.

The rest of the post is what I provided for you to read. I tried twice to edit that post to make it clear what was contained in it and the edit wouldn't "stick".  I never had that happen before, so I don't know why I couldn't edit my own post. 

I just tried to edit this post and it is working.  I still can't edit the previous post.  The links in my previous post work for me, maybe you can try them again and you will see what the source of the article is.