ftp.wwiv.com/ftp.wwiv.com.zip/ftp.wwiv.com/pub/GENUTIL/arj262a.exe/UPDATE.TXT

Text File | 1999-01-08 | 34KB | 770 lines

     UPDATE.TXT, ARJ 2.62a BETA TEST RELEASE                  January 1999


     This documents new or updated information since ARJ 2.60.
     Please refer to UPDATE.TXT in ARJ 2.60 for more information.

     YOU SHOULD REFER TO THE ARJ WEBSITE REGULARLY TO CHECK FOR PROBLEM
     REPORTS AND PROGRAM UPDATES.

     http://www.arjsoftware.com


     ** IMPORTANT NEWS ****************************************************

        This is a public PRE-RELEASE TEST VERSION of ARJ 2.62a.  You should
        only use this version for TESTING PURPOSES.  This version is NOT
        intended for new ARJ users.  Only experienced ARJ users should
        test this program.

        Please keep in mind that this is a PRE-RELEASE TEST version and
        may have program bugs.  You should backup your computer data
        before using this program and should do so often while using this
        program.

        Several users have reported that various releases of ARJ have
        cause VIRUS ALARMS from Norton AntiVirus software.  This release
        and all previous releases have been checked by IBM, Norton, McAfee
        virus scanners.

     ** THIS RELEASE USES AN ENHANCED ARJ ARCHIVE HEADER FORMAT  **
     ** COMPATIBLE WITH PREVIOUS VERSIONS OF ARJ.  HOWEVER,      **
     ** SOME THIRD PARTY ARCHIVER MENU PROGRAMS MAY NOT BE       **
     ** COMPATIBLE WITH ARCHIVES PRODUCED BY THIS ARJ VERSION.   **

        The ARJ file header has been lengthened by a number of bytes to
        support additional file properties.  The new "-j$" option will
        disable this new header enhancement.

        It is STRONGLY RECOMMENDED that you run the TESTARJ.BAT batch file
        to verify that this version of ARJ.EXE is working correctly.

        Please do report any issues that you encounter with this new
        version.  Some problems such as the rare hang with the -hm option
        have only been reported two times in six months.

        We are also interested in your comments concerning these new
        features.


        The name of our company has changed to ARJ Software, Inc.

        ARJ Software, Inc. is now marketing two archiver products, ARJ and
        a new archiver JAR (JAR16/JAR32), that produces "J" archives which
        are not compatible with ARJ.  The 32 bit version of JAR (JAR32)
        supports the Windows NT operating system version 3.50 and above as
        well as Windows 95.

        We have developed the new archiver, JAR, so that we could provide
        state of the art data compression with solid archiving techniques
        and new compression algorithms.  These improvements could not be
        added to ARJ without introducing serious compatibility issues with
        older releases of ARJ.  JAR16/32 compresses significantly better
        than ARJ and PKZIP for many files and provides long filename
        support for both Windows 95 and Windows NT.  JAR16/32 duplicates
        much of ARJ's powerful functionality and provides new original
        functionality, too.  However, it does not duplicate ARJ and it
        requires more system resources (memory and cpu power) to run.  See
        our web site for a copy of this archiver.

        Please note that it is our intention to continue supporting and
        enhancing the ARJ product.  A significant number of new features
        have been added to ARJ in the past year.  ARJ has the advantages
        of a large installed base, a simple archive format, significant
        third party software support, and a long history of reliable
        performance.  We also plan to provide ARJ support for Windows. A
        32 BIT CONSOLE VERSION OF ARJ FOR WINDOWS 95 AND WINDOWS NT IS
        AVAILABLE FOR TESTING.

        This version has been changed with regard to the storage of the
        SFX modules and the built-in help information.  The change now
        requires that MS-DOS 3.0 and above be used to access the SFX
        modules and the help information.  Under DOS 2.11, the help
        screens and self-extractor creation will work if ARJ.EXE is
        located in the CURRENT directory.  This change frees up more
        conventional memory for ARJ use.


        The mailing address of ARJ Software, Inc. has changed as of
        August 1993.

        ARJ Software, Inc.
        P.O. Box 249
        Norwood MA 02062
        USA

        FAX: [phone]

        EMAIL: [e-mail]

        There is ARJ WEB site support information added to the file
        ARJ.TXT.  It is excerpted below:

        http://www.ARJSOFTWARE.com                    (ARJ homepage)

        http://www.Dunkel.de/ARJ                      (German and English)
        http://www.glo.be/tsf                         (French and English)

        You can find information about the world of ARJ on the Internet by
        using various search sites including www.altavista.com,
        www.yahoo.com, and www.dejanews.com.

        Our credit card ordering procedures have changed.  We now process
        credit cards directly.


     **********************************************************************


     ARJ YEAR 2000 COMPLIANCE STATEMENT

        The program ARJ is YEAR 2000 compliant and will not produce errors
        processing date data in connection with the year change from
        December 31, 1999 to January 1, 2000 or with the leap year factor
        from February 28, 2000 to February 29, 2000 when used with accurate
        date data.  This statement applies to ARJ versions 2.30, 2.41a,
        2.50a, 2.60, and versions under development.

        No special user changes or activities are required for this
        compliance.  No programming or configuration changes are required
        either.

        Disclaimer:  The Statement of Compliance refers to ARJ products as
        delivered by ARJ Software, Inc.  The Compliance Statement does not
        apply to third party add-on features or products. The Compliance
        statement does not constitute a warranty or extend the terms of any
        existing warranty.

        This statement supersedes all previous ARJ year 2000 compliance
        statements.


     ARJ YEAR 2000 IMPROVEMENTS

        This version of ARJ has been modified to allow the specification
        of the century for the ARJ date options "-o" and "-ob".  Prior to
        this version, the ARJ date options would accept a date in the form
        of YYMMDD.  With this version, ARJ will accept dates in both
        YYMMDD and YYYYMMDD formats.  ARJ will presume that any year
        specifications beginning with 19, 20, and 21 are YYYY type
        specifications and any year specifications beginning with 80, 81,
        82 ... 99 are YY type specifications.

        Example:  -o980105         -> on or after Jan 5, 1998
                  -o19980105       -> on or after Jan 5, 1998
                  -o100105         -> on or after Jan 5, 2010
                  -o20100105       -> on or after Jan 5, 2010
                  -o201001051200   -> on or after Jan 5, 2010 12:00 P.M.


     LONG FILENAME SUPPORT

        ARJ versions 2.60 and above support long filenames ONLY in the
        Windows 95 graphical environment.  ARJ does NOT support long
        filenames in Windows NT, NTFS, or OS/2.  ARJ is a DOS program that
        uses the special DOS hooks available in Windows 95 to access the
        long filenames.

        In development is a 32 bit console mode version of ARJ that
        supports Win 95 and Win NT long filenames.  It should be available
        for public testing and comment before the end of 1998.

        REMINDER: When specifying filenames with embedded blanks or
        symbols like ">", "<", or "|" on the command line, you MUST quote
        the filenames.

        When specifying a target directory name that contains spaces, you
        must quote the directory name.  If the name specification ends in
        a "\" backslash (needed for a non-existent directory), you must
        insert a space after the "\".  Alternatively, you can use the
        "-ht" option.

        Example:  ARJ x archive "C:\Program Files\ "    or
                  ARJ x archive "-htC:\Program Files"

        In addition, ARJ 2.62 supports the Win95 file properties date-time
        accessed and date-time created.  This support results in slightly
        larger archives.  The "-j$" option can be used to disable this new
        feature.  ARJ does not support the file attributes of TEMPORARY or
        COMPRESSED.


     WINDOWS 95 LONG FILENAME LABELING

        A very noticeable change is how ARJ archives files within Windows
        95.  In 2.60, ARJ would label/mark all files saved in Windows 95
        as Windows 95 long filename files.  In 2.61 and above, ARJ will
        label as Windows 95 files only those files whose Windows 95
        filename is different from its MS-DOS filename.  "NAME.txt" is NOT
        the same as "NAME.TXT" because of case.  As an aid, ARJ will
        display the count of long filenames encountered when adding files
        or listing an archive.  The longname test is done based upon the
        filename or pathname specified by the user.  Filenames within a
        longname directory would not necessarily be labeled as Win95 long
        filenames if the filename specification excluded the directory
        name.

        The new "-hf4" option will set ARJ to label all files saved under
        Windows 95 as Windows 95 long filenames (as in 2.60).

        To help locate Windows 95 files within an archive, ARJ has a new
        "w" option for the "-hb" option.  For extraction, deletion, and
        listing, the "-hbw" option will select only files that are marked
        as Windows 95 files.  This option is non-functional for adding or
        updating files.  It is limited to selecting files within an
        existing archive.  This option is useful when extracting an
        archive in MS-DOS and encountering one or more "Requires Win95 or
        -hf...." error messages.  The user would be able to view the files
        that are affected and take appropriate actions.

        Example:  ARJ x archive *.*           (assume some Win95 errors)
                  ARJ x archive *.* -hf1

        Windows 95 DOS support (and therefore ARJ) do not support access
        to long filenames containing certain characters.  For example, a
        filename containing the copyright symbol or the trademark symbol
        cannot be accessed in a Win95 DOS window with the COPY command
        or with ARJ.  These type of filenames can only be accessed via
        their short names.  The Win95 system normally stores filename
        characters as two bytes per symbol allowing an alphabet of 65536
        possible symbols.  Because Win95 DOS only uses one byte per
        character position allowing only a 256 symbol alphabet, many
        characters are displayed by Win95 DOS as "_".


     COMPATIBILITY WITH ARJ32

        With this release, a new program ARJ32 for Windows 95/98/NT has
        been released for alpha level testing.  ARJ32 has been designed to
        support the Windows 32 bit environment.  It is generally
        compatible with ARJ for DOS (2.xx).  However, ARJ32 has an option
        to use the ANSI codepage to access the file system instead of the
        default OEM codepage.

        Archives created using the ANSI codepage may not be processed
        correctly by ARJ for DOS because of a filename translation issue
        (ANSI to OEM codepage).  Special symbols and foreign characters
        may not be translated correctly.  In addition, ANSIPAGE archives
        have an additional compatibility issue with versions of ARJ from
        2.30 and earlier.  Those versions will treat ANSI codepage
        archives as CORRUPTED ARJ-SECURED archives.  This should not be
        an issue since ANSI codepage archives should not be processed by
        ARJ for DOS.  ARJ 2.62a will not process such an archive unless
        the "-hy" option is specified.


     ARJSFX/ARJSFXV POST EXTRACTION EXECUTION OPTION

        For software distributors, this version of ARJ provides for the
        execution of a command after self-extraction.  The ARJSFX and
        ARJSFXV modules support the execution of a command after a
        successful extraction.

        The ARJSFX and ARJSFXV modules support the "-!" option which
        allows the user to build a self-extractor which will execute a
        command after its files are successfully extracted.

        This option is most useful with the embedded command line feature.
        The command must not contain any blanks if it is used in the
        embedded command line.  If a target directory is specified, the
        target directory will be set as the working directory for the
        post-extraction command.

        Example:  )) C:\DIR\ -!SETUP.EXE

        The above example will cause the command "SETUP.EXE" to
        be executed in the directory C:\DIR.

        Please note that the user will always be prompted by the
        self-extractor for permission to execute this command.  This
        prompt is disabled for ARJ-SECURED self-extracting archives.


     ARJSFX/ARJSFXV VIRUS CHECK

        Both the ARJSFX and ARJSFXV self-extractors now perform a simple
        virus damage check before processing the self-extractor's archive.
        If damage is detected, the self-extractor will abort with an error
        message indicating possible damage.

        This check will not work for a virus designed specifically to
        attack ARJ self-extractors.

        The ARJSFX self-extractor has a "-s" option to skip this virus
        check.  The ARJSFXV self-extractor has a "-a" option to skip the
        virus check.  You can include the above skip option as part of
        a custom built-in command line.


     ARJSFX/ARJSFXV VERIFY BEFORE EXTRACTION OPTION

        Both the ARJSFX and ARJSFXV self-extractors now accept the
        "-x" and "-t" options simultaneously to enable the testing of an
        archive just before extracting the archive.

        Example:  )) C:\DIR\ -x -t


     ARJSFXV PASSWORD PROMPT

        A garbled ARJSFXV self-extracting archive will automatically
        prompt the user for the password when extracting or testing the
        archive.

        You must use ARJ 2.61 and above to create the garbled archive as
        well as create the ARJSFXV self-extractor.

        Example: ARJ a vendor *.* -gpassword -je -v360

        NOTE: If you create a garbled archive with ARJ 2.61 and above and
        add ungarbled files and then delete the garbled files, ARJ will
        continue to mark the archive as a garbled archive.  Currently,
        only the ARJSFXV module takes note of this marking.


     ARJSFXV SUPPORT FOR FILE DTA AND DTC PROPERTIES

        The ARJSFXV self-extractor will restore Win95 file date-time
        accessed and date-time created properties from an ARJ archive
        that contains those file properties.  ARJ 2.62 and up can
        create such an archive.  This feature will only work within
        the Win95 GUI environment.  The "-j$" option can be used to
        disable this support.


     ARJ COMMAND LINE SHORTCUT

        New to ARJ 2.62 is the expansion of command line directory names
        to full wildcard specifications.  However, this feature will only
        work properly if the first filespec on the command line is NOT a
        directory.  The ARJ placeholder "..." can be used for that first
        filespec.  A directory name used as the first filespec will result
        in that directory being specified as the TARGET directory and
        affecting subsequent filespecs.

        Example:  ARJ a archive ... DIR1 dir2 dir\dir3
                  is equivalent to
                  ARJ a archive DIR1\*.* dir2\*.* dir\dir3\*.*

        Example:  ARJ a archive DIR1 dir2 dir\dir3
                  is equivalent to
                  ARJ a archive DIR1\dir2\*.* DIR1\dir\dir3\*.*


     ARJ RESPONSE FILE

        ARJ supports the specification of the "-g" and "-g?" options on
        the command line along with a response file specification.

        Using this feature is more secure than putting a password
        specification within an ARJ response file which is written to
        disk.


     SHAREWARE LIMITATIONS

        After ARJ version 2.41a, full functionality of a small set of ARJ
        software features will NOT be available in the shareware versions
        of ARJ (registered or not).  These features include the multiple
        volume self-extractor, the ARJSFX embedded command line feature,
        and the inhibit display messages option.  The full featured
        versions will ONLY be available from ARJ Software, Inc. and its
        agents.  Registered ARJ users can upgrade to this version for a
        small shipping/handling fee (five dollars) or a SASE with
        diskette.

        Check the WHATSNEW.TXT file for changes since ARJ 2.41a.


     ENCRYPTION

        New to version 2.60 is a new encryption scheme based upon the
        Russian encryption algorithm (GOST 28147-89 cipher).  This
        algorithm is similar in design to DES; however, GOST is designed
        for software implementation.  GOST 28147-89 uses a 256 bit key and
        32 rounds of encryption.  In addition, this implementation of GOST
        also uses the 64 bit cipher feedback mode.

        This new encryption is accessed by using the "-g" option to
        specify the password and the "-hg" option to specify the new
        scheme.  This new scheme is in addition to the older XOR garble
        scheme.

        The encryption module is a separate COM file named ARJCRYPT.COM.
        ARJ expects to find the encryption module in the same directory
        as itself.  This has the advantage of saving space with the
        ARJSFXV module and the DEARJ.EXE module when encryption is not
        needed.  You simply do not include the encryption module in the
        archive when not using encryption.

        For non-USA users, the encryption overlay module is not included
        with this version of ARJ.  Because of USA export regulations,
        ARJ Software, Inc. may not export the encryption overlay module
        from the USA.

        ** Please NOTE that losing your password means losing your file!
        ** Please DO NOT ask for technical support on lost passwords.
        ** There is no shortcut/backdoor for determining lost passwords.

        New to ARJ 2.61 is a limited key size version of GOST encryption.
        ARJ 2.61 now provides a "-hg!" option which invokes the built-in
        40 bit key version of the Russian GOST encryption algorithm. The
        normal GOST algorithm has a 256 bit key size. This limited
        encryption is provided to meet USA encryption export rules.


     ARJ CAUTIONS

        Whenever archiving to diskettes, it is HIGHLY recommended that
        the option "-jt" be used.  This helps spot BAD diskettes or BAD
        diskette drives.  It is HIGHLY recommended that the "-jt" option
        be used in a Windows or multi-tasking or network environment.
        In addition, the diskette drive should NOT be read or write
        cached.  This allows the "-jt" option to work properly.  For
        Windows 95, ARJ.EXE at 2.61 automatically forces a re-read of
        the diskette drive.

        The XMS accelerator in Hurricane 2.0 MAY interfere with the use
        of the ARJ -hm! option within a Windows DOS box.  You can use
        the -hm option instead.

        UNERASE or UNDELETE commands do not always recover a file/archive
        correctly.  This will result in damaged archives.  This is true
        for all archive types.  You should always test an archive after
        unerasing it.

        CAUTION: To those who use the "-t1" and/or "-t1g" options to
        save a few extra bytes.  This option should only be used on TEXT
        FILES. Those are files created by EDLIN, EDIT, QEDIT, BRIEF,
        NOTEPAD, and others.  Text files typically contain only letters,
        numbers, spaces, and punctuation marks.  WORD PROCESSOR format
        files ARE NOT TEXT FILES!  MS WORD, Wordperfect, AMIPRO, WRITE,
        and similar files ARE NOT TEXT FILES. Using the "-t1" or "-t1g"
        on any other kind of file probably will result in DATA LOSS!


     ARJ ERRORLEVELS

        ARJ will now return a DOS error code of 11 for a user control break
        action.  ARJ formerly returned a code of 2 for this situation.

        ARJ will now return a DOS error code of 12 when trying to modify a
        chapter archive that already has 250 chapters in it.  ARJ formerly
        returned a code of 2 for this situation.


     ARJ COMMANDS

     "l" command
     "v" command

        ARJ will display the count of files selected within an archive
        that have Windows 95 long filenames.

        The listing format has been changed to better indicate the century
        years.  Instead of a "+" symbol to indicate the year 2000, ARJ will
        now display a "0" for year 2000, a "1" for the year 2100.  This
        character appears immediately before the date-time field.

        The "v" command will now display Win95 file date-time accessed
        and file date-time created properties if they exist in the archive.


     ARJ SWITCHES

     "-g" switch

        The garble option in this version of ARJ has three versions. One
        is the original version found in earlier ARJ releases.  It is
        compatible with older versions and works like those versions.

        The second garble version uses a separate encryption module.

        This new option is accessed by using the new "-hg" option.  This
        option sets ARJ to use the separate encryption module to encrypt
        the data.  By default, ARJ will look for the file "ARJCRYPT.COM"
        in the same directory where the ARJ.EXE being executed is found.
        The user may specify the pathname of the module to use.

        Examples:  ARJ a archive *.doc -gThis_is_a_password -hg
                   ARJ a archive *.doc -gpassword -hgc:\dir\enc.com

        The new garble option accepts a password key up to 32 characters
        long.  Excess characters are ignored.  Garble passwords ARE CASE
        SENSITIVE!  DO NOT LOSE your password!  There is no known method to
        recover the password other than by brute force, which could take a
        very long time.  The longer the password, the longer it would take
        to "guess" it.

        A variation of the "-hg" option is "-hg!".  This "-hg!" option
        accesses a built-in version of GOST that is limited to a 40 bit
        key size.  This algorithm is designed to meet USA encryption
        export rules.

        These new encryption schemes are not compatible with the "-g"
        option of pre-2.55 versions of ARJ.  If you want to maintain
        compatibility with pre-2.55 versions of ARJ, you should NOT use
        the "-hg" option.

        Only the multiple volume self-extractor supports the new encryption
        module.

        When garbling or ungarbling an existing archive, ARJ will detect
        the method of encryption previously used and select that same
        method regardless of whether the "-hg" option is specified or not.


     "-oa" switch

        The "-oa" and "-oab" switches allow the user to select files under
        Windows 95 based upon file date-time last accessed.  "-oa" selects
        files after the date value, "-oab" selects files before.

        This ARJ version does NOT support combining "-o", "-oa", "-oc" with
        one another.  You CAN combine "-oa" with "-oab".


     "-oc" switch

        The "-oc" and "-ocb" switches allow the user to select files under
        Windows 95 based upon file date-time created.  "-oc" selects
        files after the date value, "-ocb" selects files before.


     "-odb" switch

        The "-od" and "-odb" switches allow the user to select files based
        upon the number of days from today.  The "-odb" switch allows the
        user to select files modified before the specified number of days
        from today.  You CAN combine the "-od" and "-odb" switches.


     "-v" switch

        New to ARJ 2.61 is a simple delete option "D" when creating volume
        archives.  For SAFETY REASONS, this delete option is limited in
        scope and specification.  The exact file or files (via wildcard)
        must be specified. A directory name is not sufficient (A:\ or
        C:\TEMP).  A filename or wildspec is required (A:\*.* or
        C:\TEMP\*.TXT).  In addition, this delete option does not delete
        through (recurse) subdirectories. In other words, this delete
        function works similar to the DOS DEL command except that a
        filespec is required.  ARJ accepts all characters after the "D"
        option as the filespec.

        Examples:  ARJ a a:archive -vada:\*.*
                   ARJ a testvol -v1440dtestvol.a*


     "-h#" switch

        This feature has been modified to use only the last two digits of
        the year.  So the year 2010 will be represented by "10".  This
        will still provide "uniqueness" for filename generation.  Daily
        created archives will not collide name-wise for 100 years.


     "-hb" switch

        This switch is used to select by file attribute or file type.

        The "-hb" option can be used to select files by their attributes
        (normal, readonly, hidden, system, directory, and archive bit).
        "Normal" is defined as files that are NOT the following: readonly,
        hidden, system, label, chapter header, or directory.  For
        extract/list operations, you can also select chapter labels and
        volume labels.  By default, the "-hb" option by itself selects all
        types of files.  If you specify a letter symbol representing a file
        type, you are selecting ONLY that type of file.  You can specify a
        series of letters representing all of the file types that you want
        to select.  For example, the "-hbdr" option selects both
        directories and readonly files.  Selections are additive.

        Example: -hbnr   select only normal and readonly files

        Single letters represent each attribute or type.
          a - archive bit set
          b - archive bit clear
          h - hidden
          r - readonly
          s - system
          d - directory
          n - normal files (not d, h, r, s, l, c)
          l - volume label
          c - chapter label
          f - abbreviation for "ndhrs"
          w - Windows 95 long filenames

        The archive bit selection ("a" or "b") is a special case.  If you
        have selected no types of files EXCEPT files with the archive bit
        set, ARJ will select from the set of all file types. If you have
        selected one or more file types, ARJ will select based upon the
        archive bit from the selected set of files types.

        Examples: -hbhrsa      select hidden, readonly files with archive
                               bit set
                  -hba         select all files with archive bit set

        Add/update options  : f, d, r, h, s, n, a, b.

        Extract/list options: f, d, r, h, s, n, a, b, c, l, w.

        Examples:  ARJ a archive *.* -r -hbrs     select only readonly
                                                  and system files
                   ARJ a archive *.* -r -hbd      store only directories
                   ARJ l archive *.* -hbr         list only readonly files
                   ARJ l archive -jb* -hbc        list chapter headers

        Notes:  The option "-hb" with no letter options is an abbreviation
        for "-hbndhrslc" (all types).


     "-hf3" switch

        When building a dual-name archive, ARJ will now check for files that
        have long filenames inaccessible through MS-DOS.  These are
        filenames that contain symbols that WIN95/MS-DOS translates into the
        underscore "_" symbol.  ARJ will display the "Can't open ..." error
        message for each such file encountered.


     "-hf4" switch

        This switch sets ARJ to label all files archived under Windows 95
        as Windows 95 long filenames.


     "-hg" switch

        This switch is used to specify the filename of the encryption
        module to be used when encrypting a new archive.  The default
        filename is "ARJCRYPT.COM".  ARJCRYPT.COM contains a new encryption
        scheme that is incompatible with earlier releases of ARJ.  ARJ will
        look for the encryption module in the directory that contains the
        copy ARJ.EXE that is being executed unless the specified module
        name contains a path symbol "\" as in "ARJ\OLDCRYPT.COM".  If you
        want to use a module in the current directory, you should specify
        the name as in ".\ARJCRYPT.COM".  The "." indicates the current
        directory.

        With an existing archive, ARJ detects the encryption scheme that
        was used to encrypt the archive and uses the same scheme regardless
        of whether the "-hg" option is specified or not.


     "-hg!" switch

        This switch is used to specify the use of a built-in 40 bit
        version of the Russian GOST encryption algorithm.  This algorithm
        is limited to a 40 bit key to meet USA encryption export rules.
        Any password input to this function will be crunched down to a
        40 bit size.


     "-hq1" switch

        This switch sets ARJ to ignore the error that occurs when ARJ
        cannot open a file because it cannot be found during an add-type
        command and/or a compare command.  This is DOS error code 2.
        This option applies only to files being added to a new archive
        and/or being compared.  For an existing archive, this option
        will be ignored during the add operation, but NOT during a
        subsequent compare operation.

        This open error typically happens when a temporary file that ARJ
        has found to archive is purged by another process before ARJ can
        actually open and compress/compare it.  This is not the same
        error as when a user specifies a filename on the command line
        and ARJ cannot find it.

        This error also occurs in Windows 95 when trying to archive
        files with filenames that contain "unusual" symbols.  These are
        the symbols that have no equivalent in MS-DOS.  MS-DOS displays
        those symbols as "_" underscore.

        If you use the "-ji" option to set up an index file, ARJ will
        log any file that it cannot open.


     "-hy" switch

        This switch will set ARJ to allow the extraction of ARJ32 created
        archives containing ANSI codepage filenames.  ARJ for DOS always
        uses the OEM codepage which may translate ANSI codepage filenames
        incorrectly or not at all.  Filenames containing only alphanumeric
        characters and the DOT symbol should be translated correctly.

        The default for ARJ32 is the OEM codepage.


     "-j#2" switch

        This switch will set ARJ to restore the file attributes to the
        selected files.  No file will be extracted.  Archives created
        with the "-j#" and "-j#1" options can be used.


     "-j#3" switch

        This switch will set ARJ to restore the file dates (written,
        accessed, created) to the selected files.  No file will be
        extracted.


     "-j#4" switch

        This switch will set ARJ to restore the file attributes and the
        file dates (written, accessed, created) to the selected files.  No
        file will be extracted.


     "-j$" switch

        This switch will set ARJ to NOT save the file properties date-time
        accessed and date-time created.  This will save header size and
        result in a slightly smaller archive.  During extraction, this
        switch will set ARJ to NOT restore the file properties date-time
        accessed and date-time created.


     "-ji" switch

        ARJ will now log extraction errors to the index file.


     "-jo1" switch

        This switch will set ARJ on extraction to generate unique output
        filenames AND keep the current file extension.

        Example: NOTE.TXT will generate NOTE.001.TXT and so on.


     "-jt" switch
     "-jt1" switch

        In DOS and Windows 95 when using removable media (diskettes), ARJ
        will flush and invalidate cached diskette data from memory, so
        that testing is done on the actual data on the diskette.  A side
        effect of this improvement in reliability is longer diskette
        testing times.

        Missing directories will now be reported as errors.


     "-jt3" switch

        This switch allows one to do a quick compare of files within an
        archive and on disk.  ARJ will only compare the date-time stamps
        and the size of the files.

        Example:  ARJ t archive -jt3

        There is a limitation in that multiple volume archives will generate
        (size) errors for the files split over volumes.


     end document