Window-'hooks'

[MvM]

Maybe this is a strange question being a (new) NSX-owner but on my left and right door door-frame I have these small black 'hooks'. What are they for? I have not yet found a user manual for my car (still looking) and have been unable to find it in the FAQ.
Maybe someone else can explain their use to me.

 

[ck]

I believe those are to help guide the window into correct position when going up.

 

[salontools]

CK is correct. They also keep the windows from bowing out at speed from the "vacuum effect."

 

[MvM]

Thanks guys for the info.
Another mystery solved (for me).