I'm having trouble specifying a print area for a document in InDesign:
The document size is A1, yet I want to print a specific section in A3 paper. Any ideas how to achieve this?
First drag the zero point of your rulers to the top left of the area you want to print.
Then open the print dialog and under the Setup tab, check Tile and select Manual. You can see in the preview on the left that the printed page (the smaller rectangle) is positioned on your document (the larger rectangle) at the zero point of your rulers.