I am {{$local}} variable.
I am {{$global}} variable.
{{BEGIN context}}
	I am {{$local}} variable.
	I am {{$global}} variable.
{{END}}

<?php

$Template = new Blitz('tpl');
$Template->set(array('local' => 'local (root)'));
$Template->set_global(array('global' => 'global'));
$Template->block('context', array('local' => 'local (context)'));
echo $Template->parse();

?>

I am local (root) variable.
I am global variable.

	I am local (context) variable.
	I am global variable.