You can set paper size in Report Designer under File -> Page Setup menu.

>I have to print a report that goes up to half of a letter
> paper (continuos paper,matrix printer)
>
> The problem is that it jumps a whole page
> lefting a half white paper
>
> i need the printer to stop right in the half of the paper
>
> Is there a way to configure the report the size of
> paper so that my client does not need to personalize
> the paper at print panel ?