1. What does it take to get support for standard containers as ranges? According to what I can see in the documentation, the standard containers don't satisfy the range concepts. IOW, begin(v) isn't valid when v is a standard vector. From what I can tell from browsing the implementation, the requirement should be: boost::begin(v) and the default behavior of boost::begin needs to be documented. 2. http://www.boost.org/libs/range/doc/style.html mentions SwappableRange. What is that and where is it defined? The only things I can imagine it meaning are highly counterintuitive. 3. Where did you put the documentation that describes the conformance of built-in strings, arrays, etc. to the Range concepts? -- Dave Abrahams Boost Consulting www.boost-consulting.com