/sys$common/syshlp/helplib.hlb PATCH, Qualifiers, /JOURNAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /JOURNAL[=filespec]

    Indicates an alternate journal file specification. By default,
    PATCH creates a journal file with a file specification that
    consists of the current defaults. Use the /JOURNAL qualifier when
    you want to specify an alternate file specification. If you omit
    fields in the file specification, PATCH supplies the following
    default values:

    Filespec Field              Default Value

    device and directory        defaults of current process
    file name                   name of input image file
    file type                   JNL
    version                     1

    Subsequent PATCH sessions append information to the journal file,
    rather than create a new version of this file.

    The asterisk (*) and the percent sign (%) wildcard characters are
    not allowed in the file specification.