自由设定用户权限上传，下载，文件属性，压缩，解压缩，邮件发送等 可设定用户使用空间大小 开启，关闭注册 风格自由更换 更多功能请自行发现 -free to set up user rights upload, download, file attributes, compression, decompression Send mail users can be set, such as the use of open