Dear list, 

As I have a book with many chapters, I’d like to reset footnote numbering at each chapter. 

How can I achieve this?

I’m looking here:

http://wiki.contextgarden.net/Footnotes

but can’t find a solution

I looked also at  \setupfootnotes but it says: 

way bytext bysection

Start numbering from 1 again at the start of every section? 

BTW on mkiv, so I guess I should use \setupnotation