Bitstream is releasing its first OpenType Pro Pack, Charter BT, which features six fonts: roman, italic, bold, bold italic, black and black italic. The fonts include characters originally developed for expert sets, such as ligatures, ornaments, old style figures, small caps and superiors. They support Western, Central European and Eastern European languages. OpenType fonts are a cross-platform font format. The same OpenType font can be installed on Mac OS X, Windows, Linux and Unix systems.