Memory is such an odd thing: not having thought of it in years, I recalled that Gestalt was a Mac feature to allow it to know its own capabilities:

https://apple.fandom.com/wiki/Gestalt

I can't remember why I opened a cupboard door, although I recently came across Cerulean blue in an art shop which after much googling got me to the X files episode that I can't have seen since it first aired. memory is indeed weird