Retro1.org codex

ECHO                                                     CP Privilege Class:  G

Use the ECHO command to place the terminal in the echo environment.  When in
the echo environment, any input line entered is transmitted unchanged back to
the terminal a specified number of times.  The format of the ECHO command is:
+----------+------------------------------------------------------------------+
| ECho     | [1|nn]                                                           |
+----------+------------------------------------------------------------------+
where:

1 | nn   is the number of times that the line is to be sent.  The default is 1.
         An invalid entry (that is, one that is greater than 99 or contains
         nonnumeric characters) is treated as 1.


Usage notes:

1.  When the specified number of lines has been displayed, another read to the
    terminal is issued to accept another data line.

2.  To terminate the display before completion (for example, when you want to
    change the data line), press the attention key.

3.  No line editing is done; the output line is the same as the input line and
    may contain any of the logical line editing symbols.

Responses

ECHO ENTERED;  TO TERMINATE TEST, TYPE END
   is displayed after the ECHO command is invoked to indicate that the echo
   environment has been entered.

ENTER LINE
   is displayed to prompt for an input line to be entered.  A reply of END
   returns the terminal to the CP command environment.