It's covered in the IBM course (UV905) UniVerse Theory and Practice, which is the replacement for UniVerse Internals. (See http://www-306.ibm.com/services/learning/ites.wss/us/en?pageType=course_description&courseCode=UV905)
Don't have a copy with me at the moment. From memory you're on the right track. The MF functions are the low-level functions that work with the rotating file pool. MFcheck determines whether an "open" file is currently in or out of the pool, and often returns having determined that the file's "in". MFclose, MFfree and MFopen you can probably guess after that! (Note that MFfree is usually called from MFopen.) The DB... functions are the higher-level, or logical, functions invoked by the UniVerse file manager. For any file that's not guaranteed a file unit, it's always necessary to go via the rotating file pool. Use the FILEMAP option of PORT.STATUS to map file names to FileNo and Chan. ------- u2-users mailing list [EMAIL PROTECTED] To unsubscribe please visit http://listserver.u2ug.org/