[MSDN Library June 1998] Do Not Rely on Color Alone (22.2224157686114%)
MSDN Library Visual Studio 6.0 > Platform SDK > Windows Programming Guidelines > Windows Logo and Programming Guidelines > Logo Requirements, Recommendations, and Best Practices > Provide Consistent, Up-To-Date Windows Support > Accessibility and User Interface
[MSDN Library June 1998] Do Not Rely on Sound Alone (21.260877307073%)
MSDN Library Visual Studio 6.0 > Platform SDK > Windows Programming Guidelines > Windows Logo and Programming Guidelines > Logo Requirements, Recommendations, and Best Practices > Provide Consistent, Up-To-Date Windows Support > Accessibility and User Interface