Hi Luc, While I agree with Dean about the current tutorials being perhaps too domain-specific, I do find that they give a good overall sense of the library, specially in combination with the examples. Would I would do to complete the "overview" picture is "annotate" the examples. That is, they do contains a few remarks, but IMO thet could use longer comments explaning rather than just restating what the code is doing. For example.. from Point Usage: //constructing a gtl point typedef gtl::point_data<int> Point; int x = 10; int y = 20; Point pt(x, y); assert(gtl::x(pt) == 10); assert(gtl::y(pt) == 20); There it could say that point_data<> is one particular model provided by the library BUT that the library is designed to be completely generic, so that could just as well have been a user defined type properly "adapted" //a quick primer in isotropic point access typedef gtl::orientation_2d O; using gtl::HORIZONTAL; using gtl::VERTICAL; O o = HORIZONTAL; assert(gtl::x(pt) == gtl::get(pt, o)); Here it could say a few words about why isotropic access is useful and why it is part of the library API. And so on with all the examples. Having said, as a review manager, I believe the library is ready to be released. Best Fernando Cacciola