How Do I initialize FileMan ?
Initializing FileMan is not the same as using FileMan.
In the process of working with Files and Fields, FileMan uses various information that it has to initialize the first time it needs to use it. It is highly likely the case that FileMan has been initialized if you have a VistA system. It won't hurt anything if you choose to re-initialize FileMan, but it is still very rare that FileMan will need to be re-initialized.
Initializing FileMan recreates some of the basic Data Dictionary and File of File Entries. It is accomplished at a MUMPS Prompt using a call to the routine ^DINIT.