Indicates that a sequence of keystrokes, called a learn sequence,
    defines the command to be bound to a key. You must type the
    keystroke sequence immediately after the command and end the
    sequence by specifying the END DEFINE command. If you are using
    the EVE keypad, CTRL/R is bound to the END DEFINE command by
    default. However, you do not have to define a key to be the
    END DEFINE command to use the DEFINE KEY/LEARN command. When LSE
    records the learn sequence, the key being defined by the DEFINE
    KEY/LEARN command binds to the END DEFINE command. Therefore, you
    can press the key that you are defining to end the learn sequence.

    When executing the stored sequence, LSE includes your responses to
    all prompts but does not prompt you again for such information as
    the string for a SEARCH command.

    You may not use a learn sequence to enter a key definition while
    another key is in the process of being defined by another learn
    sequence.