The reticle could be either an optional aiming guide or pointer controls, it's hard to tell.
I see, thanks for the explanation.
Kinda OT, but it's a performance art thing, as far as I know there's no cultural background to it other than, well, being calligraphy. It's a relatively recent phenomenon that's popular particularly with a high school age audience and often done to pop music, so it's pretty appropriate that the Inklings would use something based on it.
I see, thanks for the explanation.