[Shadab]

Originally Posted by winstone

what does following function do?

PHP Code:

$templater->register_page_templates(); 


It makes the header, footer and headinclude templates available to the template being evaluated.

Originally Posted by winstone

can we include other templates inside it? e.g. $templater->register_page_templates('top_bit', 'side_bit', 'etc');

No. But you can do that via the register() method.
For example: [untested]

PHP Code:

$templater = vB_Template::create('TEST');

$templater->register_page_templates();
$templater->register('navbar', $navbar);

$templater->register('my_sidebar_1', vB_Template::create('sidebar_1')->render());

print_output($templater->render()); 


This would make the sidebar_1 template accessible via {vb:raw my_sidebar_1}
in your main TEST template.