CAN ANYONE TELL ME THIS RewriteEngine FUNCTION?

[puge]

Can anyone tell me about this RewriteEngine? Is function:

RewriteEngine On
RewriteBase /
RewriteRule ^(\w+)$ $1.php
RewriteRule ^(\w+)\((\w+)/(\w+)\)$ $1.php?$2=$3
RewriteRule ^(\w+)\((\w+)/(\w+)/(\w+)/(\w+)\)$ $1.php?$2=$3&$4=$5
RewriteRule ^(\w+)\((\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)\)$ $1.php?$2=$3&$4=$5&$6=$7
RewriteRule ^(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)$ $1/$2.php?$3=$4&$5=$6
RewriteRule ^(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)$ $1/$2.php?$3=$4&$5=$6&$7=$8
RewriteRule ^(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/(\w+)/((\w+)-(\w+)) $1/$2.php?$3=$4&$5=$6&$7=$8
RewriteRule ^(\w+)/(\w+)$ $1/$2.php

[just_m3.]

RewriteRule ^(\w+)$ $1.php // prefixed php ex yourname.php
RewriteRule ^(\w+)\((\w+)/(\w+)\)$ $1.php?$2=$3 //prefixed.php with $action = $get-action

i can't detail because i dont know .. just a small idea about how it works