My (brief) review of Phoenix. I vote to accept Phoenix into Boost, and in addition make the following comments. My vote is not dependent on addressing these comments. I have been using Phoenix for a short time (a few weeks), so cannot comment in the in-depth manner of Doug and others, but only give some first impressions as a user. The library addresses a much needed area of functionality, and seems to be conceptually cleaner then BLL. I have found understanding and using it fairly straight-forward. The only shortcomings I have encountered are in areas of documentation and ease of discovery. I would prefer to see Phoenix presented as an independent library, rather than as an aspect of Spirit. It is made clear in the documentation that Phoenix does stand alone, but I would prefer to see this made much clearer at higher level. I would like the equivalence of BLL's _1, _2 etc and Phoenix's arg1, arg2, etc to be made clearer in the documentation, and a clear statement whether Phoenix supports the _1, _2 style 'out-of-the-box'. Coming from a cold-start to investigate Phoenix, I found several different locations, eg, SourceForge, Boost Subversion, the vault, with old versions (I think - I never quite understood what was what!), so I'd like to see everything that's discarded deleted, and any relationships between what remains made clear. Finally, I should not let this opportunity pass without saying what a magnificent construction I consider Phoenix to be, despite any minor wrinkles that more rigorous investigation might reveal. - Rob.