I set up a computer for an engineering department. It was an IBM PS/2. They wanted to run AutoCAD and Ventura Publisher, one used extended memory and the other

I set up a computer for an engineering department. It was an IBM PS/2. They wanted to run AutoCAD and Ventura Publisher, one used extended memory and the other expanded. I ended up making batch files that swapped around autoexec.bat and config.sys files so they could run.