Click Print in the Module Picker at top or press Command-Option-5 (PC: Ctrl-Alt-5) to jump to the Print module. In the Template Browser in the left-side Panels area, click Maximum Size. This template positions the photo so that it prints as large as possible on the selected paper size with the full image showing. In Figure 2, the paper is set for vertical (portrait) orientation, but the photo is horizontal (landscape). Lightroom automatically rotates the photo sideways so you get as big a print as possible.