Command Prompt Tricks

F1 retypes the previous command one character at a time
F2 brings up a dialog and asks “Enter the char to copy up to:”
F3 retypes the last command in full
F4 brings up a dialog and asks “Enter char to delete up to:”
F5 as for F3
F6 Print EOF character (Ctrl+Z)
F7 brings up a dialog of all the recent command history
F8 brings up each of the most recent commands, one at a time
F9 brings up a dialog and asks “Enter command number:”