<P> 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 . </P> <P> In Microsoft Windows, pressing Prt Sc will capture the entire screen, while pressing the Alt key in combination with Prt Sc 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 Prt Sc with both the left Alt key and left ⇧ Shift pressed turns on a high contrast mode (this keyboard shortcut can be turned off by the user). Since Windows 8, pressing the ⊞ Win key in combination with Prt Sc (and optionally in addition to the Alt 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 . </P> <P> In KDE and GNOME, very similar shortcuts are available, which open a screenshot tool (KSnapshot or GNOME Screenshot respectively), giving options to save the screenshot, plus more options like manually picking a specific window, screen area, using a timeout, etc . Sending the image to many services (KDE), or even screen recording (GNOME), is built - in too . </P> <P> Macintosh does not use a print screen key; instead, key combinations are used that start with ⌘ Cmd + ⇧ Shift . These key combinations are used to provide more functionality including the ability to select screen objects . ⌘ Cmd + ⇧ Shift + 3 captures the whole screen, while ⌘ Cmd + ⇧ Shift + 4 allows for part of the screen to be selected . The standard print screen functions described above save the image to the desktop . However, using any of the key sequences described above, but additionally pressing the Ctrl will modify the behavior to copy the image to the system clipboard instead . </P>

What is the use of print screen key in keyboard