The shortcut for the past function in most computer programs is "Ctrl + V". This shortcut is used to paste the contents of the clipboard into a selected area. To use this shortcut, simply copy the content you want to paste by pressing "Ctrl + C" or right-clicking and selecting "copy". Then, place your cursor where you want to paste the content and press "Ctrl + V" or right-click and select "paste". This shortcut works in most programs, including Microsoft Word, Excel, PowerPoint, and many others.