Where is in theme/default/post.template.php

Hi I have SMF 2.0.9 version and want to find this code



'sub' => array

('code' => 'sub', 'before' => '<sub>', 'after' => '[/

sub]', 'description' => $txt[448]),



in themes/default/post.template. php



please some someone tell me exact line of that code





Th...</sub>



Where is in theme/default/post.template.php