Moving views and split screen (AS3 games development issue)

How do you move the workspace dynamically using AS3 (say in a platform game where the viewable area pans around the player)?
One suggestion was to make everything move relative to the player:
Is there a way to group all movie clips together, without creating and iterating through an array?
For example there could be one holder movie clip which all viewable objects (apart from the background image) are attached to.
Each of the objects could have x and y coordinates relative to the holder movie clip.
I don't know how to do this though.
Is there a better way (i.e. changing the x and y offset of the workspace dynamically)?
Say if one was to make a multiplayer game where each level is over 4000x4000 px in dimensions.
How do you split the screen with AS3 so that each player has their own view of the level?
Thanks in advance for any replies

After doing some further research I found that a genius named Bryan Heisey has invented a an opensource virtual camera using actionscript 3.
I.e. a movie clip stores a snapshot of its current position as bitmap data which it draws on to the stage.
After hours  of painful trial and error, I've modified the Actionscript 3 version of VCam, to be contained in an external actionscript file and to support split screen mode.
I'm not sure if I've ironed out all the glitches out yet though as my trial version has expired and I'm still waiting for delivery of the registered version .
I'll try and have a tutorial up and running in a week or 2...

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