Question about data compression algorithms parameters -

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i have question - can share information, compressions algorithms , parameters, affects compression rate ( time not important)?

for example, googled command line arguments winrar, find complete list of parameters. mb have usefull links, listed parameters actualy affects compression quality? not win-rar, compression algorithms in general.

thank time.

according http://daily-it.blogspot.com/2007/11/rar-command-line-with-real-world.html, command line option -m5 give highest compression level winrar. lowest -m0.

some compression tools have such parameters , others don't. gzip, example lets specify --fast, --best, or in between. you'll have search around , maybe download other tools documentation in order see parameters are.


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