Hi Guys, I have three interesting questions in regard to graph properties. Please assume Boost 1_29_0. I'm a little slow in upgrading ... ;-) 1. If I define: MyGraph_t const myGraph; Why cannot I get a property map to access my property: typedef boost::property_map<MyGraph_t, MyPropTag_t>::type MyPropMap_t; MyPropMap_t myPropMap = get(MyPropTag_t(), myGraph); Instead I need to use for each access: get(MyPropTag_t(), myGraph, *i) I have noticed that gcc 3.2 complains in regard to conversion to a non-scalar type being similar to that of myGraph without const-ness of the nested property type. What can I do to get normal map access? 2. Why not use a copy constructor if it exists when copying graph elements? Is the existence of a copy constructor a hard-yard to verfiy with MPL? 3. I noticed that remove_edge(...) complains in regard to a missing default constructor of a property object. Don't get me wrong; this happened during an editing mishap and I know that we need regular types here. Why is this required if you are removing an element? Thanks for the pointers/opinions! :-) Matt