Boost
  C++ Libraries
  
  ...one of the most highly
  regarded and expertly designed C++ library projects in the
  world.
 — Herb Sutter and Andrei
  Alexandrescu, C++
  Coding Standards
rationalerationale — Describes the rationale for a particular function's design
| Name | Type | Value | Purpose | 
|---|---|---|---|
| last-revision | #IMPLIED | CDATA | Set to $Date: 2008-06-15 20:48:40 +0100 (Sun, 15 Jun 2008) $ to keep "last revised" information in sync with CVS changes | 
| id | #IMPLIED | CDATA | A global identifier for this element | 
| xml:base | #IMPLIED | CDATA | Implementation detail used by XIncludes |