As you might know, pressing Alt + F4 closes the current app window, just like clicking the X in the top-right corner of a program. However, if you don't have a window currently selected, you can use Alt + F4 as a shortcut for sleep in Windows 10.

In this regard, SLDC – Gujarat would like to submit following views: 1. The SIL of transmission line for various configurations as per Annexure – II to be reviewed. It seems that there are typographical errors in table. The standard published by CEA in this regard to be considered. 2.