The crossword solution for the term 'Messing on the Screen' is DEBRA, which is a 5-letter word. Debra is a computer programming language developed by Digital Equipment Corporation in the 1970s. It was designed to be an easy-to-learn language for beginners and was used to create programs for the DEC PDP-11 minicomputer. The language was popular for a time but eventually fell out of use as more powerful languages became available. Messing on the Screen is a term used to describe errors or bugs that occur when a program written in Debra is run.