Title: Copy/move/rename file operations
To rename file you can use RenameFile function.
To copy file you can use CopyFile function.
To move file you can use CopyFile or MoveFile function.
RenameFile('Oldname', 'Newname');
CopyFile(PChar('Oldname'), PChar('Newname'), False);
MoveFile(PChar('Oldname'), PChar('Newname'));