Apache HTTP Server Version 2.3

This document supplements the mod_rewrite
reference documentation.
It describes how one can use Apache's mod_rewrite
to solve typical URL-based problems with which webmasters are
commonly confronted. We give detailed descriptions on how to
solve each problem by configuring URL rewriting rulesets.
[PT] flag if
using mod_alias and
mod_userdir, etc. Or rewriting a ruleset
to work in .htaccess context instead
of per-server context. Always try to understand what a
particular ruleset really does before you use it; this
avoids many problems.