General:
========
Just type 'yyt' and it will run. Type 'exit' to quit.
Type 'yyt -h' for a brief help message.

Encoding Control:
=================
Inside yyt, type ctrl-y to active yyt control mode. Then type a one character
long control mode key. The control mode controls how the incomoing strings are
encoded (i.e. it is the fromcode).

Parse keyboard input. Trigger key: ctrl-y
Known commands:
    r:	Reset
    d:	Disable any conversion
    a:	Autodetect
    g:	GB
    b:	BIG5
    h:	HZ
    u:	UCS
    7:	UTF-7
    8:	UTF-8

    y:	output ctrl-y (So we did not lose the functionality 
        of ctrl-y, hopefully.)
	
    else: Other keys are ignored.
    
* Since we capture ctrl-y, you can use ctrl-y to test if you are in yyt.
  Outside yyt, ctrl-y will beep under a shell, inside, it won't beep.

Input Conversion:
=================
When incoming encoding is set, yyt also convert your input from
your local encoding to the incoming encoding. You won't want to
use both input conversion and auto-detect at the same time. It
will be annoying at the least.

You can turn on auto-dect mode by "ctrl-y a" when you are done 
with input.
