Paper format and portrait orientation
Choose the project's common physical page format and apply layout changes.
Use
Project Settings > Pages offers Architect D, A4, A3, A2, A1, A0, Letter, and Tabloid presets. Portrait changes orientation. The Current grid readout shows the project's grid dimensions. Selecting a preset prepares settings; Apply page settings applies them to the drawing. Edit each page's grid density in its Inspector.
Caveats
Page format affects every page. Valid paper dimensions range from 10 to 5000 mm and density from 0.1x to 10x, with at least one complete grid square on each axis. Enlargement or page movement must not consume conflicting free-canvas objects. Shrinking can leave extra interpage space; Compact pages restores normal gaps only after overflow is cleared. See [ Compact the page layout ] and [ Resolve blocked page layout changes ].