[NTLDR]

Originally posted by Dark Shogun
Is mod/index.php even the right file to find that code?

Yes! The CPs have changed alot since then, the code you need to find is:

PHP Code:

makenavoption("Mass Prune","thread.php?action=prune"); 


And you need to add the code in the same format, so:

PHP Code:

makenavoption("Mass Prune Redirects","thread.php?action=prunered");