As some of my fellow #Atari owners may know, the keyboard membranes on XL-series computers deteriorate over time and malfunction. For a decade, I have been patching and mending my keyboard membrane with foil tape and conductive paint and all sorts of other crap, and it works... for a while. Until another key stops working 6 months later. :(
So, finally ordered one of these: https://www.best-electronics-ca.com/New%20XL%20Keyboard%20Mylar.htm -- and holy crap. It works. And I don't have this ridiculous patchwork crap in my 800XL anymore!
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko