Compose using a character doing common animation
Flex / Flexcurves
Beta toolset like doesn't need a video but maybe added to the docs search engine:
Onionskin comes from the world of 2D animation, where animators could stack frames on top of each other to see how the motion progressed. In messiah it allows you to see previous frames and/or future frames. You can customize how far ahead to look, how far back, and how many steps to draw (draw every frame, every third frame, etc.). The interface hasn't been activated yet, so here's how to use it:
In the Command Port at the bottom left of the interface, type OTEST(1, 2, 3, 3, 10) and press Enter. The first parameter, the 1, is the on/off switch, 1 being on. The second, the 2, is an indicator for the type of drawing to use, you can try 1 if your card supports accumulation buffers, but otherwise just use 2. The next two numbers indicate how many frames before and after the current frame to draw. The last number sets how many frames between each timestamp to draw.
So in this example: OTEST(1, 2, 3, 3, 10) The 1 turns it on, the 2 sets the graphics card drawing type. The 3's tell it to draw three images prior to the current frame and three images after. The 10 tells it that each of those before & after frames should be 10 frames apart. (So on frame 100 it will draw the following frames: 70, 80, 90, 100, 110, 120, 130. Frame 100 will be solid, and the rest will be ghosted.) Note: The onionskin effect is visible only for the currently selected item.
Here are a few samples. The settings for these are: OTEST(1, 2, 10,0,1) You probably wouldn't want to set it like the while animating, but it's really interesting looking. Points Wire A Wire B
Any other ideas