automaticly highlight start point
I don't think so. The programming to do such a thing would not be difficult, though, if you can specify what you mean by "highlighting" -- I don't think there can be a grip at only the one spot, but it could draw a Point there [and set PDMODE to make it visible], or draw a little Circle around it, or Insert a little Block, or....
Kent Cooper, AIA 
I expect something like what is in Autocad Map 3D. But in map it works only for one selected object.
You can get that same X-marks the spot indication for Polylines in "vanilla" AutoCAD in two ways -- the PEDIT command in its Edit-vertex option, or by selecting the Polyline [also works with a Spline] and picking in the Current vertex slot in the Properties palette. But those have the same limitation -- only one object at a time. And there's no equivalent to identify the start point of a Line, or Arc, or whatever else, if you're looking for that. But any and all entity types that have "start" points could have them marked with something like Points or Blocks or Circles, with an AutoLisp routine, if you're interested -- it wouldn't be a difficult thing to do.
Kent Cooper, AIA