[NTG-context] Two questions: Bib module and Headers

Hi, I'm using Bib module and bibtex to create my bibliography. I would like to order it by author name, and I'v tried it using: \setupbibtex[database=opensource-educacao,sort=author] But didn't get the desired result. Should I be using anything else ? And now for the header question: I'm using the following code to change the font size of my header from 12pt to 10pt. \setupheadertexts[][\setups{ta}] \startsetups[ta] \setupbodyfont[10pt] \getmarking[chapter] \stopsetups Using \setupbodyfont[10pt] in this case is the best solution ? Thank you, Miguel Queirós