The Files directive can be placed in .htaccess files:
http://httpd.apache.org/docs/2.0/mod/core.html#files
So, we can explicitly state locations that are accessible:
dw/*.php
dw/lib/* without dw/lib/_fla
dw/_test/*.php
This would make the configuration more robust, reduce the amount of .htaccess files and ease the integration into the static server config.