The corresponding functions are as follows: config: the configuration file directory of the terminal client, do not move or delete: save the recently closed K-line window and reopen it. Expert: The most important directory itself and its subdirectories are used to store parts commonly used by users, such as automatic trading programs, indexing programs, footer programs, library file programs, file output directories, inclusion programs, etc. History: the directory where historical data is saved. Differentiated by login account servers, historical data of different servers exist in different subdirectories. Language: Language pack directory, which stores interface text packages in multiple languages. Links: Some links to external websites in the system. Mailbox: Store the internal mail content in the "mailbox" of the terminal program. Profiles: system configuration directory Sounds: stores program voice files, and can put in new voice files by itself, which is called by the program: Symblesets: the directory for storing customized product combinations; Template: the storage directory of the program template. Tester: The results of the intelligent transaction controller test are saved in the directory tutorial: Navigation Directory.