1: Open the document to be printed, and click File → Print (P) → Print. Do not select Quick Print.

Quick print is the default print, and the print parameter debugging window will not pop up;

2: In the pop-up "Print" setting dialog box, click the "Property (P)" column to set the printer parameters;

3: Switch the tab to Page Setup, and you can choose "portrait" and "landscape" as the page direction. By default, the printer is portrait, and we usually print portrait. Here we change it to "scenery" and click "OK" to exit;

4: Click Print at this time, and the printing effect will be horizontal.