🚀 go-pugleaf

A while back someone asked if there was a command to take the wyse99Gt
from Vt100 to wyse99gt mode.  There is.  It seems that there are several
undocumented commands in the wyse99 repator.  I found these by 
experimentation.  If anybody knows of others I would like to hear about 
them. 

In Vt100 or Vt220 mode

(Esc[ = CSI)

Esc[41h    Turns on 50 line mode (Uses Ctrl-Arrow keys to move through window)
Esc[41l    Turns on 48 line mode (Uses Ctrl-Arrow keys to move through window)
Esc[?38h   Switch to Tektronics 4014 mode (from vt100 and vt220)
Esc[?42h   Switch to Wyse99gt mode (from vt100 and vt220)

Some shell functions I use go between Tek4014 and wyse99gt.

tek()
{
echo "\033~>"
TERM=4014
export TERM
}  

notek()
{
echo "\033[?38l"
echo "\033[42h"
TERM=wyse99gt
export TERM
}

Here are some other interesting tidbits.  

Hold down the G or the SETUP key on powerup will reset the terminal to it's
factory default configuation.  The Test field in the setup screen 2 does some
interesting thing.  Toggle it to ON and save the setup.  The screen will go
through it's initialization  procedure.  While it's doing this hold down the
space bar.  A series of video alignment patterens will appear.  Use Ctrl-A to
toggle between patterns.

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