
Updates to Version 2.1:

 =>  Hot Key Alt-{:
     *  switches to Chinese mode (graphic mode) regardless of
        screen content;
     *  reactivates auto-switching after Alt-} has been used;
     *  refreshes Chinese mode display (except in ZWATT);
     *  forces ZWDOS to reload the Chinese character fonts if 
        they have been lost (perhaps as a result of running a 
	graphic mode program);
     *  toggles "magnify glass" on/off for ZWCGA.

 =>  Hot Key Alt-}:
     *  switches to ASCII mode (text mode) regardless of screen
        content;
     *  temporarily deactivates auto-switching between Chinese 
        and ASCII modes. The screen will remain in ASCII mode
	until you press Alt-{, which will also reactivate the
	auto-switching. 

 =>  Command Line Switch /D
     This new switch loads ZWDOS as 'disabled.'  It is equi-
     valent to hitting the Alt-} key immediately after loading.
     ( The command line switches are no longer case sensitive,
     in accordance to MSDOS conventions.)

 =>  Command Line Switch /M
     This new switch loads ZWDOS in 'manual mode', which
     inhibits the automatic switching between Chinese and
     ASCII screens. All switching, thereafter, must be done 
     manually using the Alt-{, Alt-} key combinations.

     This switch is similar to /D except that pressing Alt-{
     will not re-enable auto-switching.

 =>  CGA Screen Updating
     A much more reliable screen updating protocol has been
	adopted for the CGA version. The CGA version now:
     *  allows direct reading of screen buffer;
     *  the screen won't be easily disrupted; 
     *  uses less memory.
     (Slight improvements may also be seen with the screen
	updating of the EGA, VGA and Hercules versions.)

 =>  CGA "Magnifying Glass" 
     A "magnify glass" has been added to make CGA text more
     readable.  (Use Alt-{ to toggle the magnify glass on and 
     off.) 
 
 =>  HZ Decoding
     ZWDOS now has a new decoding algorithm which includes
     a complete (I think) implementation of the HZ protocol.
     
 =>  Others
     * The character entry routine has been rewritten so as
       to reduce potential compatibility problems. Note that
       the 'zW' string is no longer automatically inserted in
       the beginning of a line.
