- Load regex files based on current topic. Only show the regex in this topic. To do that, it needs to lookup a table called 'topic_regex_relation' which has the relation of topic and regex filename in filesystem. - Extractapp UI with some layout modification: button, popup window, responsive (by bootstrap now). It was just for quick prototyping.

Options +FollowSymLinks
RewriteEngine on
RewriteRule ^([a-zA-Z]*)/?([a-zA-Z]*)?/?([a-zA-Z0-9]*)?/?([a-zA-Z0-9]*)?/?$ index.php?controller=$1&action=$2&id=$3&bookid=$4 [NC,L]