i tend to have "multi tabs" open. "right click any web link, and then left click open in a new tab". some times a new window. at moment i have 3 firefox windows. 1 with about 10 tabs, another, with 4 tabs, and another with about 15 tabs (different web pages on each one).
at this moment... i am replying (typeing up text), and i re-arranged another firefox window right beside it, viewing another forum on moodle.
when i get done chatting to the kids.. errr letting the pups out for potty time. i will come back, finish out my reply to you, and submit it to your thread.
and then i will go back to the other firefox window. and browse that forum.
EDIT: i let the dogs back in... i am still viewing the other firefox window. and i have this thread open in another window beside it still. and i am on the fly typing up text. "end edit". now i am going to save this post. like a book, or label that has been hidden, but the description is being displayed. so teachers only can see the notes.
i could easily do what others are talking about. and have a "real live quick note taking" simply by either clicking on different tabs in the browser. or to another browser window all together.
if above is the issue, and you simple do not know how to multi task with different tabs / windows. say so, and will make up some quick pictures. and some notes.
if you are wanting a more personalized note taking. google "annotation" and click over on images. were you see folks taking like a pen/pencil / markers and just doodling all over inside a old text book. then annotation more likely what you are looking for. i want to say there is a plugin in block www.moodle.org/plugins. but i have not went looking for something like this in some time. there maybe some firefox / chrome extensions that might do the same thing.