[MSDN Library June 1998] Portuguese (28.9854208692463%)

MSDN Library Visual Studio 6.0 > Books > Developing International Software for Windows 95 and Windows NT > Appendix Q International Keyboard Layouts

[MSDN Library June 1998] Portuguese-Brazillian ABNT2 (26.0127113175894%)

MSDN Library Visual Studio 6.0 > Books > Developing International Software for Windows 95 and Windows NT > Appendix Q International Keyboard Layouts

[MSDN Library June 1998] Portuguese Language: Accent Circumflex (^) Key Dysfunctional (14.1666666666667%)

MSDN Library Visual Studio 6.0 > Knowledge Base > Windows NT