FSBO Question: What Does ‘Insuring Buyer in Amount of Purchase Price Mean?’

From Seattle, in the For Sale by Owner (FSBO) section of Zillow Advice, fallingtide asks what the following phrase means in a  residential real estate sales contract:

“At Settlement, Seller agrees to pay for a standard-coverage owner’s policy of title insurance insuring Buyer in the amount of the Purchase Price”?“

What does it mean, “…insuring Buyer in the amount of the Purchase Price?”