WinRAR 3.70 Beta 8

WinRAR is an archive manager with support for packing RAR and ZIP archives and unpacking RAR, ZIP, ZIP64, 7Z (7-Zip), CAB, ARJ, LZH (Lempel-Ziv-Huffman), TAR, GZ, ACE, UUE, BZ2, JAR (Java Archive developed by Sun Microsystems) and ISO (ISO9660) archives. You may use it to backup your data, reduce the size of email attachments, decompress files downloaded from the Internet and create your own file archives.

WINRAR 是现在最好的压缩工具，界面友好，使用方便，在压缩率和速度方面都有很好的表现。其压缩率比之 WINZIP 之流要高。RAR 采用了比 Zip 更先进的压缩算法，是现在压缩率较大、压缩速度较快的格式之一。 主要特点：对 RAR 和 ZIP 的完全支持； 支持 ARJ、CAB、LZH、ACE、TAR、GZ、UUE、BZ2、JAR、ISO 类型文件的解压；多卷压缩功能；创建自释放文件，可以制作简单的安装程序，使用方便；强大的档案文件修复功能，最大限度恢复损坏的 rar 和 zip 压缩文件中的数据，如果设置了恢复记录，甚至可能完全恢复等等……

3.70 主要更新：
增加对 Vista 兼容性的更新;
对中文文件名的 ISO 文件的支持更完善;
使用 chm 格式的帮助文件


WinRAR features:

* WinRAR introduces an original compression algorithm.  It allows higher compression ratios than other PC archiving tools, especially for executable files, object libraries, large text files, etc.
* WinRAR offers an optional compression algorithm highly optimized for multimedia data.
* WinRAR supports files and archives up to 9,223,372,036,854,775,807 bytes in size, about 9000PB.  The number of archived files is unlimited for all practical purposes.
* WinRAR provides complete support for RAR and ZIP 2.0 archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, Z, 7Z archives.
* WinRAR supports NTFS file security and data streams.
* WinRAR offers both a classic interactive Windows interface and the command line interface.
* WinRAR provides functionality for creating a 'solid' archive, which can raise the compression ratio by 10% - 50% over more common methods, particularly when packing large numbers of small files.
* WinRAR offers the ability to create and change SFX archives using default and external SFX modules.
* WinRAR offers the ability to create a multi-volume archive as SFX.
* WinRAR offers a number of service functions, such as setting a password, adding archive and file comments.  Even physically damaged archives may be repaired and an archive may be locked to prevent further changes.  Authenticity information may be added for additional security and WinRAR will store information on the last update and name of the archive.

Bugs corrected in Version 3.70 beta 8:

- WinRAR shell extension did not work in Windows NT 4.0;
- when unpacking ZIP archives in command line mode WinRAR returned "write error" (numeric 5) code in situations when it should return "create error" (numeric 9).