code: function parseObject(tag, attrs, content, indentStr, indentLevel) {
      if (TEXT in content) {
          let args = [tag, attrs, content[TEXT], indentStr, indentLevel];
          return getType(content[TEXT])==='array' ? parseArray.apply(this, args) : renderElement.apply(this, args);
      } else {
          content = isNested(content) ? content : '';
          return renderElement(tag, attrs, content, indentStr, indentLevel);
      }
  }
docs: object members - test for txt property & pass to renderElement() or parseArray() if a nested array