Forum 7.0, I list the theme of the forum

Forum 7.0, I list the theme of the forum and topic content pages are set to a static, always dynamic content page can address the theme, how to go back,. Htaccess file is downloaded on the official website, the content is
RewriteEngine On < br> RewriteRule ^ archiver / ((fid | tid) - [ w -] + . html) $ archiver / index.php? $ 1
RewriteRule ^ forum-([0-9 ]+)-([ ,],[-9] +) . html $ viewthread.php? tid = $ 1 & extra = page % 3D $ 3 & page = $ 2
RewriteRule ^ space-(username | uid )-(.+) . html $ space.php? $ 1 = $ 2
RewriteRule ^ tag-(. +) . html $ tag.php? name = $ 1
RewriteRule ^ forums $ forums.php
RewriteCond% {THE_REQUEST} ^ [ ,],[