Parent and Base element difference

Hi OS Experts, 

I need to make "AllowAdjustments" to FALSE (from TRUE) for Parent elements in the Entity Dimension properties. so, I exported the Entity dimension in xml file and edit it in Notepad++ to update the "AllowAdjustments" to False but I am not sure which ones are parent elements. How to identify that particular element is parent or not? Is there any Key identifier to identify that the element is Parent or Base element? any suggestions. it is bit urgent kindly do needful.