Language for Expression Engine v2.0+
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Get a line of lang file without using php in you template!
Simple and quick:
{exp:language:get value="key" file="file_name"}
[key] is the key of the language array in your [file_name].
If no [file_name] has been specified [file_name] = custom_label.
$lang = array( 'site_description' => 'Website description', 'site_keywords' => 'website, keywords, key, web, site', );
{exp:language:get value="site_description"} will echo 'Website description' from /sytem/expressionengine/language/english/custom_label_lang.php
P®OBO.