Tinkering with external.php

I need to experiment with external.php and I'd like to know where does VBSeo functions replace the URL for the nice one... but VBSeo doesn't seem to have any plugins pointing to any external_xxx hook.

¿Any ideas?

Hello Felipe,

vBSEO is processing the script output in this case with ob_start() buffering function (this is done since in vB3.6.x external_complete hook was called *after* the output is sent, so it's not possible to use it and maintain compatibility with those version.