What are ISFOC character sets?
Script character set This is the primary character set containing most of the language characters and a set of symbols and numerals, which are frequently used. This set of symbols will be common across all the ISFOC character sets, with a few exceptions. The matching English Character set This is a companion character set for matching English fonts containing ASCII characters in the bottom half, and accent characters for Roman Transliteration in the upper half. The supplemental character set The supplemental character set is an extended set to the basic script character set containing conjuncts and symbols, which are not required for normal usage.