There is a package on github https://github.com/andythomas/TeX-sidenotes
that can help you with that. Check the "context" folder on that repo. Also,
you can find an example of its use at
https://github.com/zvonkok/perf-panacea

Caveat emptor: It has not been updated in 12 years. It should work for the
most part, I tried to do something with it a while ago but that project was
cancelled. I have not tested it myself but maybe later in  the week I can
take a look at it.

-- 
Andrés Conrado Montoya
Andi Kú
andresconrado@gmail.com
http://sesentaycuatro.com
http://messier87.com
http://chiquitico.org
----------------------------------------
Los fines no justifican los medios, porque la medida verdadera de nuestro
carácter está dada por los medios que estamos dispuestos a utilizar, no por
los fines que proclamamos.
----------------------------------------

“You develop an instant global consciousness, a people orientation, an
intense dissatisfaction with the state of the world, and a compulsion to do
something about it. From out there on the moon, international politics look
so petty. You want to grab a politician by the scruff of the neck and drag
him a quarter of a million miles out and say, ‘Look at that, you son of a
bitch.’” — Apollo 14 astronaut Edgar Mitchell