QUIET
                           Version 1.2

                          Gene Pizzetta
                          June 24, 1990


QUIET, originally written by Richard Conn, sets, resets, and 
displays the ZCPR3 Quiet Flag, which determines how some programs 
handle their screen displays.

USAGE:

     QUIET {{/}option}

If no option is given, DISPLAY is assumed.  A slash before the 
option is allowed, but not required.

OPTIONS:  Only enough letters are required for the option to be 
unique.  That is, only a single letter is necessary for all 
options except ON and OFF, which require two letters.

     DISPLAY   Displays current state of quiet flag.  This is the
               default option.

     SET       Turns on (sets) quiet flag.

     RESET     Turns off (resets) quiet flag.

     ON        Turns on (sets) quiet flag.

     OFF       Turns off (resets) quiet flag.

If the wheel byte is off (reset), the SET/RESET and ON/OFF 
options cause no display on the console.  If an invalid option is 
given, the program error code is set to 19 and the error handler 
is invoked, if one is running.

HISTORY:

Version 1.2 -- June 24, 1990 -- Gene Pizzetta
     It seems a little silly for QUIET to obey the quiet flag,
     since the flag is apt to change while the program is
     running.  Instead, this version uses the wheel byte like a
     quiet flag.  Also added ON and OFF as alternate options for
     SET and RESET.  Made DISPLAY option the default.  Now allows
     leading slash for options.  Added Type 3 header.  Displays
     version and load address only on the help screen.  Sets
     program error flag and invokes error handler if invalid
     option is given.  Now uses library routines for most
     functions.  Uses actual program name on help screen.

Version 1.1 -- Date and reviser unknown to me
     I did not have access to the source code for version 1.1,
     but the only difference from 1.0 appears to be observance of
     the quiet flag for display of the help screen, the use of
     Z80-specific opcodes, and printing the program name and
     version number with the D option.

Version 1.0 -- March 29, 1984 -- Richard Conn