   PHONE is a utility which allows you to talk to other users on your system.
   Once PHONE is started, the screen of the VT100 (only terminal supported)
   is split into two viewports.  After you dial someone, what you type is
   displayed in the top viewport and what the other user types is displayed
   in the bottom viewport.  At the current time, only two users can talk at
   the same time.  When your phone conversation is complete, typing CTRL/Z
   returns you to the command prompt (%) where you can exit by typing either
   another CTRL/Z or by typing EXIT and the return key.

   Command line format:  PHONE [phone-command]

      You may specify a command as part of the PHONE command line, or
      you may enter it at the command prompt (%).

    Additional information available:

     ANSWER    Characters   DIAL    DIRECTORY   EXIT     HELP    REJECT
     SCROLL    VIEWPORT
2 CHARACTERS
    The following table describes all of the special characters accepted by
    PHONE, and shows the differences between command input and conversation
    input.

    CHARACTER     AS PART OF COMMAND            AS PART OF CONVERSATION

    delete        delete previous character     same
    return        end of command                start new line in viewport
    tab           				tab to next tab stop
    CRTL/E					clear the viewport
    CTRL/G        				ring the bell
    CTRL/L        				clear the viewport
    CTRL/Q        negate a CTRL/S
    CTRL/S        freeze the screen
    CTRL/U        clear current command         clear current viewport line
    CTRL/Z        equivalent to EXIT

2 DIAL
    The DIAL command is used to place a call to another person.  It requires
    the terminal name of the person whom you wish to place the call to.  You
    can also dial another person simply by typing the terminal name.  Logical
    names (such as TI: to talk to yourself) can also be specifed but only when
    used with the DIAL command.

    The complete syntax of the DIAL command is:
 
	PHONE DIAL TTnn: or PHONE TTnn:

    When you enter this command, PHONE tries to ring that terminal's phone.
    If successful, it will continue to ring every 10 seconds until one of
    the following happens:

	o  The person answers the phone.
	o  The person rejects the call.
	o  You type any character at your keyboard.  This action cancels
	   the call immediately.
2 DIRECTORY
    The DIRECTORY command allows you to obtain a list of those terminals with
    whom you could talk on your system.  This command spawns a command line to
    the MCR to get a directory of logged on terminals.  First, it attempts to
    spawn the USERS program and if it is not available, will spawn the command
    line "DEV /LOG" to list all logged on terminals.

    The complete syntax of the DIRECTORY command is:
 
	DIRECTORY 
 
    The directory is displayed, line by line, on your terminal until the
    entire list is displayed or until you type any key on the keyboard.
2 EXIT
    When you enter this command, PHONE returns to the system.

    Typing CTRL/Z during a command is equivalement to entering the EXIT
    command.
2 SCROLL
     Specifies whether text should be scrolled  or  wrapped  when  the
     viewport  becomes  full.   If SCROLL (the default) is specified,
     existing text is scrolled up one line while new text  appears  on
     the bottom line.

     If NOSCROLL is specified, text is wrapped around  and  new  text
     appears on the top line of the viewport.

     The complete syntax of the NOSCROLL command is:

	NOSCROLL
2 SWITCH
     Specifies the telephone switch hook character  that  signals  the
     entry  of  a  command  during a conversation.  Normally, all text
     that you type is considered part of the conversation.   When  you
     type  the switch hook character, all text up to the next carriage
     return (or switch hook) is treated as a command.

     The default switch hook character is the percent sign (%).

     The complete syntax of the SWITCH command is:
 
	SWITCH=character
2 VIEWPORT
     Specifies the maximum number of lines in your viewport. The valid
     range of values is 2 to 8, with a default of 8.

      The complete syntax of the VIEWPORT command is:
 
	VIEWPORT=nn
