一个无数据库，耗费资源最小的，最实用的免费留言本程序，整个程序结构清晰，界面简单，没有多余的代码和文件，非常适合二次开发-A free , resource-intensive smallest, most practical message of the free program, the entire program structure clear, simple interface, no extra code and files, is very suitable for secondary development