Look at this cool commit:
Date: 2011-05-16 17:14:47 +0000 (Mon, 16 May 2011)
[PATCH] == Sequencer ==
This patch adds adjustment layer tracks to the sequencer and does some cleaning
up of the code.
What’s an adjustment layer?
Think of it as an effect track, which takes no explicit input, but alters
the output of everything down the layer stack.
So: you can add several stages of color correction with it.
And: you can even use it with metastrips to group several adjustments together.
Could be that my tutorials are going to be redundant soon