what is circled in the image I've linked to?

https://ibb.co/1f2STr5

unlockr.ca may have

I’m interested in the retainer clip that holds the s-pen inside the housing compartment. I can’t access it from the rear, and I can’t access it after removing the antenna. Looking at this guide, it appears that it’s also not accessible from the front after removing the OLED panel. So it must be in the subframe?

https://ibb.co/VHzhtXn

https://ibb.co/K7TZnVf

https://ibb.co/kmSGTWB