Hey! Sorry for the vague nature of the previous post.
Basically, I want to implement a graph painting system where a designer can mark nodes, in this case grid nodes but potentially on the triangulation as well, as walkable by certain types of units. It seems like that sort of thing isn't in the package, so exposing Area info to the designer and a workflow for it will be needed.
Unity uses area definitions to decide whether or not certain areas are pathable, and you can configure the pathfinding system on a unit to be able to walk on those, as far as I recall. AStar does not do that, right?