+ and does not output anything.
+ @param to
+ y-coordinate of the last visible cell.
+
+ Returned value is y coordinate of first cell than didn't fit onto page.
+ Use this value as from in next call to Render() in order to print multipages document.
+
+ @warning
+ The Following three methods @b must always be called before any call to
+ Render() (preferably in this order):
+ - SetDC()
+ - SetSize()
+ - SetHtmlText()
+ <b>Render() changes the DC's user scale and does NOT restore it.</b>