fonts for Windows XP

Fonts shipped with Windows XP use embedded bitmaps to provide legibility at small sizes on the screen. Windows Presentation Foundation (WPF) does not display these bitmaps but instead renders the outlines. These outlines are not instructed (hinted) for good legibility and the results are poor. Microsoft YaHei Regular and Bold Version 5.00 have been properly instructed for legibility at 9 point size and above in ClearType environments such as WPF.