When the mail arrives at the delivery office from the sorting centers, the postal worker places the letters into different slots, each labeled with the building number and the street where the mail needs to be delivered. This step is essential, because it allows the mail to be properly organized before heading out on the delivery route.
Prompts on PixAI are public by default, but creators can hide them on any artwork they publish. The creator of this one chose to, so the words used to generate the image stay private — only they can see them. Hiding a prompt doesn't change anything else: the artwork is still public, and you can like, comment on and share it as usual.