Which operating systems support Arabic text setting with OpenType fonts?
On the PC platform, the support for OpenType fonts that contain Arabic script specific features started with Windows 2000. Later systems might have an extended support for script specific features. The Mac does not support script specific features for Arabic in OpenType fonts. Nevertheless it has Unicode support, the “MacOS Arabic” Codepage therefore is supported. Applications on the Mac platform need to have their own implementation of Arabic feature support.