2 documents side by side

[Errol Sapir]

I see in windows 7 that  two documents can be "clicked" into position 
side by side so that one can work on both documents at the same time. 
One drags the one document to the right side of the screen and it 
"clicks" into place. One then drags the second document to the left side 
(it "clicks" into place) and both documents are then readable 
simultaneously.  I read that this is also possible in Kubuntu. Is this 
so? If so could somebody write a "blow by blow" description an how to 
enable this.
TIA
Errol