73-year old Tatsuo Horiuchi uses the popular spreadsheet program Microsoft Excel not for number calculations or data listings, but to draw elaborate Japanese motifs. In an interview to PC Online, Horiuchi said that he did not use Excel at work, but when he saw other people use it to draw graphs, he figured he could make drawings using the office tool. In 10 years, Horiuchi became proficient enough to issue works in art exhibitions.

According to Horiuchi, graphics software is expensive while Excel comes pre-installed in most computers, and is easier to use than Microsoft Paint. He tried using Word but was limited to the paper sizing and he could draw more freely in Excel.