Is 'opbd' feature supported? According to the spec[1] this feature is used to define what I think is equivalent to the protrusion values used for optical alignment of the glyphs. I grepped the sources and there seem no be special handling of it, I don't have fonts that use this feature (I didn't look for one) but I'm planning to use it in my fonts and thought I'd check if ConTeXt support it first. This Typophile thread[2] might be interesting too. If fonts are needed I can check for free fonts that implement this, or prepare a font for testing. [1] http://www.microsoft.com/typography/OTSPEC/features_ko.htm#opbd [2] http://typophile.com/node/48738 Regards, Khaled -- Khaled Hosny Arabic localiser and member of Arabeyes.org team Free font developer