Paper size increase

I use Xara Xtreme Pro 4 for a some time Xara I found a function which can be improved. When I change the Height of the Paper in Page Options, the whitespace increase upwards, which is unconvenient when I have already drown some web-design or smth, starting at the Top of the paper, and i need more whitespace. I have to drag the image, which was drown with rulers. Can you please fix it so there was an option where to add space.

This is a good suggestion. I'd like to see xtreme increase/decrease paper size the way photoshop does canvas size.