I tend to stick to the features of Autodesk Maya that I’ve used in the past, but am now forcing myself to spend a little time to rummage through the menus and pick out what else might be of use for animation. So today we have….
You’ve done your animation, have lots of lovely curves, but are now wondering “what if I adjusted that curve a little” (i.e. you go into optician mode: “is it better with….or without…”)?
You could save a copy of the scene, have a tweak and keep the copy you’re happiest with. But that’s a little heavy going and tricky to compare the two.
You could use an animation layer (which would make sense for larger experiments).
…the thing is with Buffer Curves showing, you’ll now see the old version of the curve in a darker shade. You can toggle between the old and new version using Right-Click>Swap Buffer, amending whichever of the 2 are active as you wish.
Tweak away comparing the two and, once you’ve decided on which version you prefer, make that the active one and hide the other by un-checking the View>Show Buffer Curves option.
Should you find a preference but want to carry on tweaking, you can replace the buffered (dark) curve with the currently selected one using Right-Click>Snap Buffer. You can continue amending away knowing you’ve got the other to go back to if needed.