[MSDN Library June 1998] The Allow Nulls property can't be set on a column that is part of the primary key. (40.8223684210526%)

MSDN Library Visual Studio 6.0 > Visual Studio Documentation > Data Access Tools and Technologies > Microsoft Visual Database Tools > Interface Reference > Troubleshooting Error Messages > Database Designer Troubleshooting Errors

[MSDN Library June 1998] The URL you have chosen already exists in the site structure. Would you like to add the existing navigation structure for this URL? (34.6690523217241%)

MSDN Library Visual Studio 6.0 > Visual InterDev Documentation > Reference > Site Designer Reference > Site Designer Error Messages

[MSDN Library June 1998] The file is already used in the site structure. (34.6574157549767%)

MSDN Library Visual Studio 6.0 > Visual InterDev Documentation > Reference > Site Designer Reference > Site Designer Error Messages

[MSDN Library June 1998] The specified file name is not valid. (33.7427816086353%)

MSDN Library Visual Studio 6.0 > Visual InterDev Documentation > Reference > Site Designer Reference > Site Designer Error Messages

[MSDN Library June 1998] The folder does not exist. (32.8281474622938%)

MSDN Library Visual Studio 6.0 > Visual InterDev Documentation > Reference > Site Designer Reference > Site Designer Error Messages

[MSDN Library September 1992] The Error Message File (24.6029475376446%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 18 Help Error Messages > Help Compiler 3.1 Error Messages

[MSDN Library September 1992] The Mouse and the Keyboard Interfaces (24.4609625707187%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 1 The Windows Help Application > The Mouse and the Keyboard Interfaces

[MSDN Library September 1992] The Promise of C++: Reusable Class Libraries (23.4541373260885%)

Product Documentation > C/C++ 7.0 > Class Libraries User's Guide > Introduction > The Promise of C++: Reusable Class Libraries

[MSDN Library September 1992] The Free Store and Built-In Types (22.7984109386548%)

Product Documentation > C/C++ 7.0 > C++ Tutorial > PART 2 Classes > Chapter 5 Classes and Dynamic Memory Allocation > The Free Store

[MSDN Library September 1992] The ROOT Option and Relative Paths (22.5827741789004%)

Product Documentation > Multimedia Development Kit > Viewer Developers Guide > PART 2 Advanced Techniques > Chapter 11 Advanced Build Options > Defining Root Directories