WEB I18N GAP FIXED: Upright alphanumerics in vertically-set text
By default, in runs of Latin alphanumeric text the letters are rotated 90º and run down the page. However, in some instances the alphanumerics need to stand upright. For example, this is important for acronyms.
This is now supported, using CSS, in all 3 major browser engines.
See the Gap report.