For example, long edge will mean that you turn from one page to the next along the long edge of the paper, much like an a4 magazine or standard brochure.
What does long edge mean in printing. It’s always advisable to select paper with a long grain. It all depends on the grain of the paper. Short edge means the pages are bound along the short edge of the page.
Long edge means pages are bound along the long edge of the page (left edge for portrait, top edge for landscape). The edge refers to where the next page follows on from with your print remaining upright. Short edge means the pages are bound along the short edge of the page.