USE OF F1- to F9 KEY In PC

· F1 / right arrow= Repeats the letters of the last command line, one by one.
· F2= Displays a dialog asking user to "enter the char to copy up to" of the last command line
· F3= Repeats the last command line
· F4= Displays a dialog asking user to "enter the char to delete up to" of the last command line
· F5= Goes back one command line
· F6= Enters the traditional CTRL+Z (^z)
· F7= Displays a menu with the command line history
· F8= Cycles back through previous command lines (beginning with most recent)
· F9= Displays a dialog asking user to enter a command number, where 0 is for first command line entered.
· Alt + Enter= toggle full Screen mode.