Use the Canvas area to set the size of the Canvas.
Use Scale Image
to increase or decrease the size of the picture on the Canvas. See Scale Image .
Use Resize Canvas
to change the size of the Canvas for the Draw and Paint windows. 
Use the Width and Height settings for Canvas to set or change the size of the design area. Click OK to use the new settings.
If Scale up or down to fit is selected in Paint Image, the image in the paint tab will be rescaled to fit the new canvas.
If Keep original scale is selected in Paint Image, the Paint image may be cropped to fit the new canvas.
If Keep original scale is selected, a drawing created in the Draw window over an image in the Paint window may no longer fit over the image in the Paint window.
Width
Set the Canvas Width from 20mm to 1000mm. The initial size is 100mm.
Height
Set the Canvas Height from 20mm to 1000mm. The initial size is 100mm.
Paint Image
Scale up or down to fit
Add padding to the sides of the image so that the canvas matches the new proportions.
The Paint image will remain the same quality, but any Draw objects drawn over it may no longer match.
Keep original scale
Maintain the scale of the Paint image in relation to the Draw objects. This will crop the Paint image when the size is reduced.
Any Draw objects drawn over the Paint image will retain the same proportions. The Paint image may be cropped, or become pixellated.