# Extract the XML tag name from a XML tag.
	private fun xml_tag: String do
		var tpl = new FlatBuffer
		var pos = 1
		if pos < length and self[1] == '/' then pos += 1
		while pos < length - 1 and (self[pos].is_digit or self[pos].is_letter) do
			tpl.add self[pos]
			pos += 1
		end
		return tpl.write_to_string.to_lower
	end