[NTG-context] XML and subscript

Hello, Aside from the revelation that I will have to leave my debian tetex and go with the newest ConTeXt install for the (relatively) heavy lifting I'm doing here, I will now post my accumulated end-of-day questions one by one ;0) Here's the first one: Why does this not work and what makes it work: \defineXMLgrouped [sub] \low Thanks, Joh