I am starting a new drawing, and the scales above and to the side, within the one cm margins, show 0 to 38 cm wide and 0 to 55.4 cm high. I want to use A4 paper. If I choose Format → Page the Paper Format is given as A4 with the correct A4 dimensions 21 x 29.7 cm. An image inserted on the page has dimensions in accord with the larger size given, i.e. it’s smaller than it would be on A4 paper, suggesting the larger scales are real.
A search for an answer always comes up with Format → Page, which in this case does not work.
Why the discrepancy, and how do i get to use A4 size, which is what I want.