Microsoft has also used SysRq for various OS- and application-level debuggers. In the CodeView debugger, it was sometimes used to break into the debugging during program execution. For the Windows NT remote kernel debugger, it can be used to force the system into the debugger. On modern Windows "Alt + Print screen" (which is the shortcut for SysRq on most modern keyboards ) copies an image of the current active window, instead of the entire screen as Print Screen alone would. Similar keys IBM 3270-type console keyboards of the IBM System/370 mainframe computer, created in 1970, had an operator interrupt key that was used to cause the operating system such as VM/370 or MVS to allow the console to give input to the operating system. See also Serial console Break key Scroll Lock References External links Computer keys Request Out-of-band management IBM personal computers