Centering printing on the page

[Jim Hurley]

I would like to print the area within a graphic "oval".
Here is my script:

         put topleft of grc "oval" into tTopLeft
         put bottomRight of grc "oval" into tBottomRight
         print card from tTopLeft to tBottomRight

The printed oval is not centered on the page. There is a considerable border on the left, and consequently the oval is cut off on the right.

How do I center the printing?

Thank,

Jim Hurley