流行好用的压缩工具，支持鼠标拖放及外壳扩展，完美支持 ZIP 档案，内置程序可以解开
CAB、ARJ、LZH、TAR、GZ、ACE、UUE、BZ2、JAR、ISO 等多种类型的压缩文件；具有估计压缩功能，你可以在压缩文件之前得到用
ZIP 和 RAR
两种压缩工具各三种压缩方式下的大概压缩率；具有历史记录和收藏夹功能；压缩率相当高，而资源占用相对较少、固定压缩、多媒体压缩和多卷自释放压缩是大多
压缩工具所不具备的。
Version 5.30 beta 2
1. SFX module sets sfxstime environment variable, which contains
the module start time in "YYYY-MM-DD-HH-MM-SS-ms" format.
You can specify it in Path command if you need to generate a time
based unique installation path, such as "Path=myapp-%sfxstime%".
2. Fewer password requests in following cases in "Convert archives"
command:
a) if "Convert archives" is applied to archive with encrypted
file names, which contents is currently displayed in WinRAR;
b) if archive produced by "Convert archives" includes encrypted
file names.
3. Bugs fixed:
a) RAR volumes renamed from standard .part1.rar, .part2.rar to
.001, .002 are recognized and processed correctly now.
Previous beta opened them as set of usual split files,
not as RAR volumes;
b) reports produced with "Generate report" command contained invalid
CRC32 checksums for non-archived files;
c) "rar x arcname.rar d:" command unpacks files to d: current folder.
Previous version unpacked them to d: root folder;
d) archive comment was not encrypted if added to archive with
encrypted headers using "c" command without -hp switch.
This beta encrypts an archive comment in such case.
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