Forgive me if I missed it, but am new to the environent which, while I think is fantastic,  it seems as though a solution is limited to one arduino project at a time. 

Very often I am programming multiple arduino's on different COM ports.   For example, when working on projects where there is a sender and reciever (I do a lot of CAN bus work).  Or you have two xbee boards or what have you.

It seems as though my selection for serial port up on the toolbar applies to ALL subprojects and isn't specific to one or another sub project under the main Solution.  Which means I can't easily upload to one board and then a different sketch to another without changing that global setting or loading a different solution in VS.

Am I correct?

What is great about VS, is that you have a solution, and you can have many related sub-projects under a single solution.  So would be great if I could have many arduino projects, each of which with its own serial port settings, etc., so I don't have to load different solutions to compile and upload to different arduino boards.  But it seems to me as though one solution is intended to have only one arduino subproject. 

I hope I am making sense, am I?