That's a thing in sign languages like ASL. You can establish a person, object, idea, timeline, etc. at a location in signing space, then refer back to it later by pointing. Sort of like spatial pronouns.

Hearing people do a looser version too. I constantly find myself putting abstract ideas "over here" and "over there", then gesturing back at those virtual objects later in the conversation.

Basically: pointing as pronouns.

Put-That-There (1980) was based on exactly this idea:

https://www.youtube.com/watch?v=CbIn8p4_4CQ

>Put-That-There was a gestural interface created in the Architecture Machine Group in 1980.