I almost used the term WIMP but I thought it was too obscure a reference at this point :) I still have "BASIC WIMP programming on the Acorn" by Alan Senior on

I almost used the term WIMP but I thought it was too obscure a reference at this point :) I still have "BASIC WIMP programming on the Acorn" by Alan Senior on my bookshelf for no good reason. I can't even find any cover photos online for it.