According to http://lists.boost.org/boost/2004/12/17263.php we need to add a "Best Practices" section to the Parameter library documentation: I think this is the original request, from http://lists.boost.org/boost/2004/11/16298.php: 1) A "guide for library writers" that helps one organize a library properly for named parameters. For instance, where should we put keywords? I know we should use an anonymous namespace, but should that be in namespace boost? In a "keywords" subnamespace? With a follow-on, from http://lists.boost.org/boost/2004/11/15941.php, with answers in http://lists.boost.org/boost/2004/11/15991.php:

Since they may be used so often, should they be defined in a single library-specific header, e.g. <boost/graph/keywords.hpp>?

Not neccessarily. They should probably be decoupled and included as needed in each header.

And would it help if each name had an appropriate prefix, like "bgl_", to help avoid object collisions?

Not much; I would nest the unnamed namespace inside boost (or a sub-namespace thereof). I don't know if we have enough here to warrant a separate "best practices" guide. Did anyone have anything else in mind for this section, or should we consider rolling the answers into one of the other sections of the documentation? -- Dave Abrahams Boost Consulting www.boost-consulting.com