We have docs and videos and whatnot, that describe how to use the application in order to accomplish a given task, in general terms (find some entry in the menu, go there, click that button).
What we do not have is something that describes exactly what the system is supposed to do, so that when one stumbles upon an unexpected behavior, they don't know if it's a bug or if it was intended that way (it could be either, depending on old requirements that weren't properly written down).
What we do not have is something that describes exactly what the system is supposed to do, so that when one stumbles upon an unexpected behavior, they don't know if it's a bug or if it was intended that way (it could be either, depending on old requirements that weren't properly written down).