marginblock placement

[Hans van der Meer <hansm@science.uva.nl>]

Encountered some annoying behaviour in placing sidenotes in the  
margin with \startmarginblock

(1) In a previous email I said I could get the notes in the right  
margin only. That was incorrect.
\setupmarginblocks governs the placement and of course the last call  
gets precedence when several are placed on one page.
I would like to be able to place the notes individually to the left  
or to the right, but startmarginblock has no [location=left/right]  
parameter].
It should in principle not be a problem to place floating notes left  
and right into the margin independently?

(2) In doublesided layout startmarginblock places the notes on the  
right side neatly centered in the margin.
But on the left it does not, there they are pressed against the left  
edge of the page.
In both the doublesided as in the singlesided setup i gave  
\setuplayout[margin=30mm].

yours sincerely,
dr. H. van der Meer