As you start to get into more detailed schedules you will notice the importance of Element ID’s.
This is the main defining difference between any two elements.
At the concept stage of design, the element ID’s become irrelevant but as we go into Developed Design & start to require Quantities the ID’s become essential.
For every tool you will find the Element ID at the bottom under Tags & Categories:
The NZ template for example also moves the Element ID into a more prominent area in the Info box to save you from having to open the settings:
So when you begin to schedule windows, or walls or columns the Element ID can be extremely useful to clarify which element is being scheduled.