[MSDN Library June 1998] isalpha (100%)
MSDN Library Visual Studio 6.0 > Visual C++ Documentation > Reference > C/C++ Language and C++ Libraries > Standard C++ Library Reference > locale
[MSDN Library June 1998] isalpha, iswalpha (25.6397615864528%)
MSDN Library Visual Studio 6.0 > Visual C++ Documentation > Using Visual C++ > Visual C++ Programmer's Guide > Run-Time Library Reference > Alphabetic Function Reference > I Through K
[MSDN Library June 1998] ISALPHA( ) Function (13.625%)
MSDN Library Visual Studio 6.0 > Visual FoxPro Documentation > Reference > A to Z Language Reference