This is the fastest way to create automation envelopes in Reaper - The Freehand Draw tool. For a long time, I actually didn't know about this. I was manually creating automation “handles“ on the envelope line and then manually moving the envelope lines around. I did a video on what automation is and how to do it on a vocal track here: Anyway - though you have tons of control over exactly how to automate something on a track by doing it manually, it takes FOREVER! This video shows you how to simply draw your envelope curves with your mouse, which is about a million times faster (OK, maybe only a thousand? :-P).
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