Control-key macros give you the ability to enter a control code, and have the system automatically enter a line of text for you. You may use these macros for commands or text that you use most often. The special character ` may be used in a control-key macro to perform a carriage-return.
In addition to the three control key macros, there is a special macro--the "logon" macro. This text is automatically entered into the system as soon as you logon. Command stacking using the ; character is useful here.