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Concept
Print Screen
Summary
Print Screen (often abbreviated Print Scrn, Prnt Scrn, Prnt Scr, Prt Scrn, Prt Scn, Prt Scr, Prt Sc, Pr Sc or PS) is a key present on most PC keyboards. It is typically situated in the same section as the break key and scroll lock key. The print screen may share the same key as system request.
Under command-line based operating systems such as MS-DOS, this key causes the contents of the current text mode screen memory buffer to be copied to the standard printer port, usually LPT1. In essence, whatever is currently on the screen when the key is pressed will be printed. Pressing the key in combination with turns on and off the "printer echo" feature. When echo is in effect, any conventional text output to the screen will be copied ("echoed") to the printer. There is also a Unicode character for print screen, .
Newer-generation operating systems using a graphical interface tend to save a bitmap image of the current screen, or screenshot, to their clipboard or comparable storage area. Some shells allow modification of the exact behavior using modifier keys such as the control key.
In Microsoft Windows, pressing will capture the entire screen, while pressing the key in combination with will capture the currently selected window. The captured image can then be pasted into an editing program such as a graphics program or even a word processor. Pressing with both the left key and left pressed turns on a high contrast mode (this keyboard shortcut can be turned off by the user). Since Windows 8, pressing the key in combination with (and optionally in addition to the key) will save the captured image to disk (the default pictures location). This behavior is therefore backward compatible with users who learned Print Screen actions under operating systems such as MS-DOS. In Windows 10, the key can be configured to open the 'New' function of the Snip & Sketch tool. This allows the user to take a full screen, specific window, or defined area screenshot and copy it to clipboard.
Official source
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