When you’re unsure which keys and values are available for a command take a look into the command reference which is included in each context release as i-context.pdf and also available on Hans server with variants for each interface: http://pragma-ade.nl/show-man-5.htm27. Juli 2016 um 12:32Hi Henri,
Thank you, it works. What's weird is that I used \setuphead [subsection][...] once unsuccessfully probably a mistake on my part.