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NlsIsAlpha
NlsIsPrint
NlsIsLower
NlsIsUpper

Determines if the passed character is alphanumeric, printable, upper case or
lower case.  These functions correctly interpret international characters.

Header File.....TCXLnls.h

Prototype.......FlgT CTYP NlsIsAlpha(ChrT c);
                FlgT CTYP NlsIsPrint(ChrT c);
                FlgT CTYP NlsIsLower(ChrT c);
                FlgT CTYP NlsIsUpper(ChrT c);

Source File.....FMT\NLSISALP.C

Arguments.......c  -  Character to test

Returns.........TRUE if passes test, FALSE otherwise.