Microsoft created custom digitizations of both Mittelschrift and Engschrift versions of DIN 1451 in 2013, but this version was never released publicly. In 2016, a version was released as "Bahnschrift", as Microsoft's first ever Open Type variable font. The Bahnschrift source was completely rebuilt from the ground up by Aaron Bell of Saja Typeworks and was expanded in weight, character set and manual hinting. It supports Latin, Cyrillic, Greek, currency symbols, and some Coptic. It was first included in Windows 10 version 1709, and is primarily being used as the user interface font for Xbox software.