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 if (isset($category)) {
$cat_name = $category->name;	 
$cat_alias = $category->alias;
$cat_description = $category->description;
$cat_alter_name = $category->params->get('content.category_title');
$cat_subtitle = $category->params->get('content.category_subtitle');
$cat_teasertext = $category->params->get('content.category_teaser_text');
}