[NTG-context] Microtype & ConTeXt question

http://mail.rna.nl/~gerben/microtype.tiff contains an image of a margin of a piece of text I just have typeset with ConTeXt. I was wondering about two things: 1. How does one set up the use of margi kerning in ConTeXt given that my ConTeXt (without me having selected it myself) uses Latin Modern? I have tried adding \usetypescript [serif,sans,mono] [hanging] [thanh] to my environment file. 2. If you look at the image (link above) you see that there is no margin kerning there. Also I was wondering if margin kerning would make not only the . protrude but also the slanted f protrude negatively. G