[MSDN Library June 1998] The #error Directive (100%)
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[MSDN Library June 1998] The #import Directive (95.2380952380952%)
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[MSDN Library June 1998] The #define Directive (94.047619047619%)
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[MSDN Library June 1998] The #line Directive (93.75%)
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MSDN Library Visual Studio 6.0 > Visual C++ Documentation > Using Visual C++ > Visual C++ Programmer's Guide > Preprocessor Reference > The Preprocessor > Preprocessor Directives
[MSDN Library September 1992] The #define Directive (46.6721249764728%)
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