what is DKI in the middle of a box

What is DKI? What box?

DKI stands for Dynamic Keyword Insertion. It is a feature used in online advertising, specifically Pay-Per-Click (PPC) campaigns. It allows advertisers to automatically insert the keyword that triggered their ad into the ad copy itself, making the ad more relevant to the user's search query.

As for the "box" you mentioned, it is unclear what you are referring to. Please provide more context or clarify your question so I can better assist you.