When printing on both sides, the choice of long-side flip or short-side flip mainly depends on the binding requirements and reading habits of the document.

1. Long edge flip is suitable for binding along the long edge of printing paper. For example, our textbooks are basically bound along the long side. In this way, you can select "Reverse Long Side" when printing.

2. Short edge flip is suitable for binding along the short edge. For example, most of the famous products seen in the library are bound with short edges. If you print with short edge binding, the printed document will be bound along the short edge of A4 paper, that is, select "Reverse Short Edge" when printing.

3. In addition, according to personal reading habits, if you are used to reading from top to bottom, long-side flip is more suitable; If you are used to reading from bottom to top, short edge flip is more suitable.