A cool video popped up in my YouTube suggestions. It uses x3270 scripting, for automated testing on TK5.
A while ago, I uploaded a video about using cnee to automate keystrokes to start DOS/VS. It works but it records an playbacks screen responses based on the screen position. So if you move the x3270 screen… the playback will be at an area of the screen, where the screen isn’t expecting it, and the 3270 screen will lock. This x3270 scripting method is vastly superior, because it doesn’t care where your screen is.