A nice to have feature for animation work is the ability to select a series of frames and reverse the order that they play in. Terminology differs per program, here's Aseprite and Krita:


Makes it very quick to make an animation play forwards and backwards using a single loop of a viewframe without having to check in code if it's finished or not. That's very handy for background animations like a curtain blowing in the wind.


Makes it very quick to make an animation play forwards and backwards using a single loop of a viewframe without having to check in code if it's finished or not. That's very handy for background animations like a curtain blowing in the wind.