Hi Claude
Yes, thats the normal way to do it.
Double keying is just a habit i've picked up which, to me anyway, has advantages over using a single corner key, and actually, the visual part of seeing 2 keys side by side in the timetrack is one fairly main advantage, making it easier to quickly see in the time track where things stop and start. (different colored keys would do the same)
Double keying, for me, actually came about initially when wanting to STOP a motion. (Stop drifting). From there, it became quicker to copy those keys and paste them before re-starting a move, than it was to set a corner key. Tho i still do that at times.
Edit: Just to say, i'm not suggesting that different coloured keys would be a good thing.........hadn't really thought about that...
Double-keying.. certainly interesting. I haven't done quite enough animtion to say much about that but i think that's something I ended up finding out I needed to to to get things to be stable and not slightly "wiggle" backwards before moving in Anim8or, lol!!
@NoobJens007, something that could always be improved (especially amongst Anim8or users, as we're so caught up with making decent looking characters that we don't think about it) is the camerawork, making the camera move in a way that feels natural and stuff. I think the double-keying method from johnar can help here too haha!