Abt a Method

Hi All,
Can anyone pls tell me what the below statement will do.
window.document.recalc();
Is there any built-in function like recalc();
If it is so can u please tell me what it will do?

Thanks and Regards
Anandraj.A.

http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/recalc.asp