SAllam,

I Hope you are fine my best wishes & prays always with All person. so come to the topic...... this is very Easy & Usefull thing...Here i Tell you what is function of F2 Key that is on Your Key board first line third no button....

You can Rename Any File & Folder with the help of F2 Key....Its too Easy just click on the file & only press f2 key just once.....Now your file or folder is ready for Renamed write the file name and press Enter for Save... 

 Thanks.