[MSDN Library June 1998] PI( ) Function (100%)
MSDN Library Visual Studio 6.0 > Visual FoxPro Documentation > Reference > A to Z Language Reference
[MSDN Library June 1998] PI (23.2702589807853%)
MSDN Library Visual Studio 6.0 > Microsoft Office Development > Office 97 Documentation > Excel > Excel 97 Worksheet Functions Reference > Function Reference