[MSDN Library June 1998] IsDBCSLeadByte (37.4175824175824%)

MSDN Library Visual Studio 6.0 > Platform SDK > Windows Base Services > International Features > Unicode and Character Sets > Unicode and Character Set Reference > Unicode and Character Set Functions

[MSDN Library September 1992] IsDBCSLeadByte (34.988038277512%)

Product Documentation > Win32 SDK for Windows NT > Programmer's Reference: API (prelim. ) > API Function Reference > I

[MSDN Library September 1992] IsDBCSLeadByte (33.0357142857143%)

Product Documentation > Windows 3.1 SDK > Programmer's Reference Volume 2: Functions > Introduction > HI