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#### Introduction

The Boost Preprocessing library is a library of macros, with support for preprocessor metaprogramming. The library supports both C++ and C compilation. It does not depend on any other Boost libraries and therefore may be used as a standalone library.
An excerpt from C++ Template Metaprogramming: Concepts, Tools, and Techniques from Boost and Beyond by Dave Abrahams and Aleksey Gurtovoy has been made available. This excerpt contains a basic introduction to the Preprocessor library and preprocessor metaprogramming which may help users new to the library and users interested in seeing some of the facilities offered by the library.