Description:

The directives contained in this module allow for manipulation and
control of URLs as requests arrive at the server. The Alias and
ScriptAlias directives are used to map between URLs and filesystem
paths. This allows for content which is not directly under the
DocumentRoot served as part of the web document tree. The ScriptAlias
directive has the additional effect of marking the target directory as
containing only CGI scripts.

The Redirect directives are used to instruct clients to make a new
request with a different URL. They are often used when a resource has
moved to a new location.

mod_alias is designed to handle simple URL manipulation tasks. For
more complicated tasks such as manipulating the query string, use the
tools provided by mod_rewrite.