Alt + PrtSc SysRq?
Print screen (often abbreviated Prt Scr, Print Scrn, Prt Scn, Prt Sc, Prt Scrn, or Prnt Scrn) is a key present on most PC keyboards. It is typically situated in the same section as the break key and scroll lock key. Print screen is shared with system request.
Do you ever use the PrtSc SysRq key on a PC or laptop? The main function of this key is to print out the current screen on your PC or laptop. According to my experience, I use this key to take the of any screen display on my laptop whether a program, image, or a webpage. Take a look at the image below.

The Function of PrtSc Key
Now you could see the different between each image. The right one I capture only using PrtSc key, while the left one I using Alt + PrtSc key. The purpose of this post just want to point out the combine use Alt and PrsSc key. If you use only PrtSc key, your system automatically will capture all of your active (or current) screen including your desktop and also the taskbar, while if you use additional Alt key combining with PrtSc key, your system will ony take the capture of the active (or current) windows.
Did you get the point?

