How to define margins for page pof ps output

ROOT
1

Hi ROOTers,
I want to save four histograms in one page in a ps file.
How can I define margins for ps file?
If anyone can explain it would be very appreciated.
Thanks.

2

You should create a TCanvas, Divide it in 4 part and draw an histogram in each of them.
You can change the main on the canvas and then save as a PS file.