RAR archiver:
* RAR introduces an original compression algorithm. It provides
high compression ratios on executable files, object libraries,
large text files, etc.
* RAR 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.
* RAR offers the ability to create and change SFX archives using
default and external SFX modules.
* RAR offers the ability to create a multi-volume archive as SFX.
* RAR offers a number of service functions, such as encrypting files,
adding archive comments and repairing physically damaged archives.