[Boost-users] [BGL] adjacency_list: OutEdgeList and EdgeList

I'm somewhat unclear about the difference between OutEdgeListS and EdgeListS selectors of adjacency_list. My questions is: 1. Why EdgeListS defaults to listS, while OutEdgeListS to vecS (BTW, doc says that EdgeListS defaults to vecS also) ? 2. In the docs ("Choosing the Edgelist and VertexList"), what is Edgelist: OutEdgeListS or EdgeListS? It is unclear (seems it is OutEdgeListS). TIA dedpanas