Multibyte string traversal and indexing methods

The MCharBytes method
This method returns the maximum number of bytes that any multibyte character can occupy.

The MCharLen method
This method returns the number of bytes in the multibyte character s.

The MNextChar method
This method returns a pointer to the next multibyte character after the multibyte character s.

The MPrevChar method
This method returns a pointer to the first byte of the multibyte character before the multibyte character c, where s is a pointer to the beginning of the multibyte string that contains c.