Command line Draw()

Just some basic question on the use of the command line.
Supposing, I want to draw a something,

root [26] h500->Draw()

then draw something else

root [29] h600->Draw()   

What is the syntax so that the first plot is not overwritten and a new canvas with new contents is drawn for the second call for Draw()? Thanks.


root [29] new TCanvas() root [30] h600->Draw()