SMF function question

[OnzeDanny]

I'm busy to develop a mod, to understand the way SMF works, i have next question.

When i look into the index.template.php i see different functions like this here:

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function template_body_above()
{......
}

How does SMF execute this function? (  template_body_above() )
I did not find any executing off this function 

Many thanks in advance

[emanuele]

(Short and far from perfect explanation)

These functions come in pairs:
* template_something_above
* template_something_below
and are templates for layers.

See here: http://www.simplemachines.org/community/index.php?topic=462649.msg3233063#msg3233063

So you can use:

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$context['template_layers'][] = 'something';
to execute them (provided that the template is loaded).