Hello all:

First of all, I�ve been trying to learn Boost Library usage and I�m very new to this topic!!!!!

Now a simple question: In the book �The Boost Graph Library,� TimePropertyMap has been used to keep track of the discovery time for each vertex (p116, Backtracking Graph Search). I fail to understand how this property map should be defined. Could anybody please explain to me what exactly is a property map and how it should be defined in this particular case? Thanks in advance.

Abhi