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                     Here's an example of using it:  | 
                
                     
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Remember, you can use and re-use any track profile you want. Pick the track whose profile you want, then hit OTC (or click Option, Track, Capture Track Profile). Any track you draw now has this profile. You can also apply this profile to other tracks in the scene. Pick other tracks and hit OTA (Option, Track, Apply).
The rekindle command allows your contraptions to regenerate themselves as many times and as frequently as you want. Here are two examples: