Therefore, these fonts became incompatible with Unicode. Some of the codepoints for Burmese script were implemented as specified in Unicode, but others were not. Numerous attempts at creating fonts with Burmese support were made in the 2000s, but they were developed as Unicode fonts that were only partially Unicode compliant. Compounding the fact that Myanmar experienced sanctions from the West, this had resulted in much of the Burmese localization technology being developed locally without external cooperation. Furthermore, there were significant revisions in Unicode's implementation of Burmese script up until Unicode 5.1 in 2008. The support for complex text rendering for personal computers did not arrive until Windows XP Service Pack 2 in 2004, and a Burmese font utilizing this technology did not exist until 2005. Unicode incompatibility (ad hoc font encodings)īurmese script is a complex text layout script, whereby the positions and shapes of its graphemes vary based on context. 1 Unicode incompatibility (ad hoc font encodings).