Canon Pixma iP90 User Manual page 103

Page Attributes (Page Setup Dialog Box)
If you select Page Attributes from Settings in the Page Setup dialog box,
you can change the paper size and scaling options.
(1) Format for
Select the name of the printer you are using.
(2) Paper Size
Select the paper size for the print job. To enter the size manually, select
Custom Paper Size from Settings.
(3) Orientation
Select the direction of the print job. In the Landscape orientation, you
can further select to flip the print job to match the paper you are
printing on.
(4) Scale
Specify the scaling percentage to resize the document for printing.