DOSKEY

Loads the Doskey program into memory. The Doskey program recalls 
MS-DOS commands and enables you to edit command lines and create 
and run macros.

Note: If your typing speed is not very fast, use DOSKEY when 
you use MS-DOS on the command line. For example, you typed a 
command, and then you want to run it again, you can recall the 
command easily by just pressing the UP ARROW key. Although you 
can press F3 key to recall the command you just typed without 
running DOSKEY, DOSKEY preserves much more commands which you can 
recall using the UP ARROW key. Addtionally, by using DOSKEY, you 
can modify the command you are typing. You can move the cursor 
back to the place of the command where you want modify, without deleting 
any of the command. If you don't use DOSKEY, by default, when 
you press the LEFT ARROW key, the character before the cursor 
will be deleted. By default, DOSKEY starts with overwrite mode. 
You can start DOSKEY with the switch "/insert" to make it run in 
insert mode. In Windows Me, when you start a command prompt, by 
default, DOSKEY is running in insert mode. In Windows NT 4, 
you have to modify the properties of the Command Console to 
change the mode of default DOSKEY mode (the default is overwrite mode). 
In Windows 2000 it is almost the same case as in Windows Me. 
In Windows 9x, by default, Doskey is not automatically loaded 
with the command prompt.

For more information, please refer to MS-DOS Help or Windows NT 
command line command help.