I don't think that's what the OP was asking.
I believe it was about the old functionality, where it used to be possible to hit the up-arrow key to get the last thing typed. Hit the up-arrow key to get the thing typed before that, etc.
In 2007, Autodesk changed this behavior, and now it only remembers certain things. It's become very annoying. I'm not at all impressed with the change.
I haven't found any way to get the old behavior back, but I haven't really looked, either. Using Civil-3D, there have been too many other problems with higher priority.