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Product name: WinRAR 3.92 Portable
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Official publisher website: http://www.codecguide.com/about_mega.htm
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Information:
WinRAR is a powerful archive manager (Win32, Linux, Mac). RAR files can usually
 compress content by 8 percent to 15 percent more than ZIP files can. WinRAR
 is a powerful compression tool with many integrated additional functions to
help you organize your compressed archives. It can backup your data and reduce
 size of email attachments, decompress RAR, ZIP and other files downloaded
 from Internet and create new archives in RAR and ZIP file format.
WinRAR puts you ahead of the crowd when it comes to compression. By consistently
 creating smaller archives, WinRAR is often faster than the competition. This
 will save you disc space, transmission costs AND valuable working time as well.
 WinRAR is ideal for multimedia files. WinRAR automatically recognizes and selects
 the best compression method. The special compression algorithm compresses
multimedia files, executables and object libraries particularly well.

Features of WinRAR:
• Using WinRAR puts you ahead of the crowd when it comes to compression by
consistently making smaller archives than the competition, saving disk space
and transmission costs.
• WinRAR provides complete support for RAR and ZIP archives and is able to
unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z archives.
• WinRAR offers a graphic interactive interface utilizing mouse and menus as
well as the command line interface.
• WinRAR is easier to use than many other archivers with the inclusion of a
special “Wizard” mode which allows instant access to the basic archiving functions
 through a simple question and answer procedure. This avoids confusion in the early
stages of use.
• WinRAR offers you the benefit of industry strength archive encryption using AES
 (Advanced Encryption Standard) with a key of 128 bits.
• WinRAR supports files and archives up to 8,589 billion gigabytes in size. The
number of archived files is, for all practical purposes, unlimited.
• WinRAR offers the ability to create selfextracting and multivolume archives.
Recovery record and recovery volumes allow to reconstruct even physically damaged
 archives.
• WinRAR features are constantly being developed to keep WinRAR ahead of the pack.

Changes in Version 3.90:
1. WinRAR version for Windows x64 is available. If you use Windows x64, it is
 strongly recommended to install 64 bit WinRAR version. It provides a higher
 performance and better shell integration than 32 bit version.
2. RAR compression speed is improved for multi-core and multi-CPU systems. This
improvement is most noticeable in Windows Vista and Windows 7 operating systems.
3. “Remove duplicate folders from extraction path” option in “Settings/Compression”
 dialog is replaced by more universal “Remove redundant folders from extraction path”
 option. This option will eliminate redundant archive name based folders from
extraction path if you unpack an archive with “Extract to DestName\” context menu
command and if archive root folder contains only one folder and no files.
4. Changes in “Extraction path and options” dialog:
      a) “New folder” button creates a new subfolder in currently selected folder;
      b) F2 key renames a selected folder in the folders tree;
      c) F5 key updated the tree pane contents;
      d) Del key removes a selected folder in the folders tree.
5. You can enable “Show seconds” option in “Settings/File list” dialog if you wish
to see seconds in file dates in file list in WinRAR shell.
6. “Where to check for SFX archives” options group in “Settings/Integration/Context
 menus items” dialog lets you to control processing of SFX archives in context
menus. For example, if you frequently right click “.exe” files on slow network
 disks, you can turn off “Network disks” options to minimize the delay before
displaying the context menu.
7. If you sort files by name in the file list in WinRAR shell, WinRAR will use
 the new logical file name sorting, same as in Windows Explorer, considering
digits in file names by their numerical value. So files will be sorted as 1.txt,
 2.txt, 10.txt instead of previous 1.txt, 10.txt, 2.txt. This new sort behavior
is available in Windows XP Service Pack 2 and newer.
8. Ctrl+W key combination can be used to close the main WinRAR window also as
 WinRAR viewer windows. “View as Windows text” shortcut in WinRAR viewer changed
 from Ctrl+W to Ctrl+I.
9. New command line switch -r- disables recursion completely. So ‘rar a -r- arc
 dirname’ command will add only the empty dirname folder and ignore its contents.
 By default, if dirname does not include wildcards, RAR adds its contents even
if -r switch is not specified.
10. If used when extracting, the new command line switch -ai forces RAR to
ignore file attributes. When using this switch, extracted files will always
have attributes assigned by operating system to a newly created file by default.
11. If output file name is not specified in “cw” command, console RAR will send
 comment data to stdout.
12. When compressing stdin data with -si switch, RAR sets modification
time of archived entry to current system time. Previous RAR versions did not
 fill this field, resulting in meaningless modification time for stdin.
13. Message displayed when you place the mouse cursor on WinRAR tray icon
includes the archive name now. Previously only time left and total percent were
 displayed for archiving operations.
14. New ‘Shutdown’ variable in ‘Software\WinRAR\Policy’ registry key allows to
disable “Turn PC off when done” option for security reasons. Read “Configuration
 settings/Registry variables” for more details.
15. Better shell extension performance. Now WinRAR context menu will be more
responsive when working with thousands of selected files.
16. Improved compatibility with high DPI Windows display mode.
17. Bugs fixed:
      a) WinRAR could fail to open tar or tar.gz archive if such archive
 contained a file larger than 8 GB;
      b) WinRAR context menu did not work properly in Windows 7 beta if icons
 in context menus were enabled and user clicked a file inside of Windows 7
Library folder;
      c) previous WinRAR versions failed to rename files having 5 or more
continuous spaces in the name. WinRAR shell does not display such spaces for
 safety reasons, because they can hide an actual file extension. But this
security measure prevented the rename command to work properly.   
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Installation:

It’s portable – just extract & run!
Enjoy!
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