"snap" point/line and simultanious edit

[LukePhilips]

Is it possible to have a point that is snapped to the end of a line that when the point is moved the line moves with it?

[JianHuang]

I'm not sure about your use case. It seems not necessary. If you want to move the end of the line with the point, just move the point and make the line end snapping to the point.