Thank you, JohnMu.  I believe I attempted to utilize the "Give us feedback," link.  I never had a really good brain, but I know that somewhere, locked in what is left of it, using up space better used otherwise, is that definition.  But, I found this today because I want to either edit or delete comments I made on a video and there is no way to do that.  As much thought as I put into posting the two comments I made, aside from the problem of over-editing so that they would fit, and, hence, read nonsensically, having done more thinking, person-to-person, real-time discussing, and actual research, I would like to change them.  Thoughtful process is important, and the ability to evidence that, even on the Internet, is important, as I am sure you would agree.