[Mediawiki-l] Right hook to use for head html element?

[Dorem - Jérémie Bouillon]

Hi,

I'm trying to output some tags just before the </head> attribute on each 
page generated by MW.

Since I want to minimize updating headaches, I'm trying the extension 
way. But for the life of me, I can't find the right hook or syntax.

My Manual searches gave me the OutputPageBodyAttributes hook but it's 
1.17 only.

Anyone got the right hook, or a simple syntax example?

Thanks a lot.