BOOL AddSheetLast( LboxString *LString );
BOOL AddSheetLast( LPTSTR lpSheet );
BOOL AddSheetFirst( LboxString *LString );
BOOL AddSheetFirst( LPTSTR lpSheet );

BOOL CopySheet( long nIndex, LboxString *LNewString );
BOOL CopySheet( long nIndex, LPTSTR lpNewSheet );
BOOL CopySheet( LboxString *LString, LboxString *LNewString );
BOOL CopySheet( LPTSTR lpSheet, LPTSTR lpNewSheet );

BOOL CopySheet( LboxString *LString );
BOOL CopySheet( LPTSTR lpSheet );
BOOL CopySheet( long nIndex );