Changing tabs to returns

I want to change some tab characters in a paragraph to return characters. I’m not sure how to do it. Will someone please explain how to do this. I’m working at a FaceSpan app that will work with QuarkXPress 4.11.

The following code will replace tab characters with return characters in a Quark document:

tell application "QuarkXPress™"
	tell document 1
		set (every character of every story where it = "	") to "
"
	end tell
end tell

Hope this helps,

Thanks Mytxlscript. I had initially got this to work by using a repeat statement but the solution you give is much better.