If you select an existing context file from the Context Database
    Entries field, the name of the context and the associated
    information is displayed in the read-only Context, Parent, and
    Context File fields.

    For a new context, or one for which you are modifying the
    associated context file specification, you may use the Modify
    Database Entry... menu item from the File menu to bring up a file
    selection widget.

    If any part of the file specification is not supplied; for
    example, the disk name, the corresponding component of your
    current default directory specification is used. If the name
    or the file type is not specified, the name of the currently-
    specified context is used as the file name and .DECSET_CONTEXT is
    used as the file type.