🚀 go-pugleaf

I have a PC/AT ( DOS 3.1  ) and I implemented the following, giving 
yellow foreground and blue background:

I added to CONFIG.SYS the following line :

DEVICE=C:ANSI.SYS ( or the appropriate pathname ; this file comes with
MS DOS )


added to AUTOEXEC.BAT:

TYPE YELLOW.BLU    ( or the appropriate filename )

Created file YELLOW.BLU containing the following escape sequence:

ESC[1;33;44m 

 I used vi to create this file, but a BASIC program would do it, if 
 EDLIN rejects the escape sequence.

More information can be found on the DOS Technical Reference, Chapter 3:
Using Extended Screen and Keyboard Control( section on SET GRAPHICS 
RENDITION - SGR ).

This manual doesn't come with the PC and has to be purchased from IBM 
at a cost of $100 .