(1) The main manual mentions (bottom of pg 78) "setting the state is done
for the whole header" and (bottom of page 79) "the keys state, before and
after work on all parts of the pagebody, main text, margins and edges.

So there's no way to set the text/margin/edge states separately ?
( I need different visible/invisible settings for standard, frontapart and
backpart )

(2) pg 80 table 4.5: what's the difference between state=normal and
state=start ?

(3) in \setup*[margin/edge] ( * = top/header/footer/bottom ), how do you
differentiate between
the left and right margin/edge areas ?

Thanks and have a great weekend,
Alan