The MISC database is used to store inter-user messages, and inter-database macros (refer to Inter-DB Macros for further information about inter-db macros). This database can only be opened in write mode by one user at a time, but many users can read from it. All users need to be able to write to this database, but only when they are sending messages or writing inter-database macros, or deleting messages and macros. All users can read from the database at any time.