protected function computeFormattingElement()
	{
		foreach ($this->branches as $branch)
		{
			foreach ($branch as $element)
			{
				if (!ElementInspector::isFormattingElement($element) && !$this->isFormattingSpan($element))
				{
					$this->isFormattingElement = false;

					return;
				}
			}
		}
		$this->isFormattingElement = (bool) count(array_filter($this->branches));
	}