[NTG-context] How do legends work ?

Dear all, I am a new user of ConTeXt. Despite the manuals and the wiki, I am unable to use correctly legends. I tried to modify the legend typography through the \setuplegend command but it does not seem to work. Here is an example I used in Live ConTeXt on the wiki : \setuplegend[bodyfont=small] % or big, 20pt, whatever... \starttext Hello world! \startlegend \leg test \\ test \\ test \\ \stoplegend \stoptext The PDF file produced has no change of font size. Surely I did not understand how legends work. Let me say that my first attempt was to get rid of the "=" sign in the legend. Thanks in advance for your help and sorry if the question is a bit dummy !