I worked on an airline computer for years as a travel agent and some of the computer codes that are so deeply imbedded in the system are quite archaic. I used some of them and some of the formats with the system in the background along with made up formulas.
This is painted with recycled acrylic house paint and I used some colored pencil too.
I have not signed it yet. I paint on flat un-stretched canvas, and I will sign it as soon as I have it stretched and then it will get a clear varnish over the top too. The photos are best when taken without the varnish.
recycled house paint