5-Inch HDMI Raspberry Pi Touch Screen

A couple of years have now passed since I purchased an Elecrow 5" HDMI Touchscreen display for the Raspberry Pi and put it to use. I even 3D printed a very nice case for it. So, there’s a bit of configuration code on the SD card that can be edited to determine if the 5" screen is active, or if the RPI’s output is directed to its HDMI output port. Well, in the last 2 years I forgot what to edit and what changes to make.