Buildings cannot be preserved simply because they interest academics and architectural historians; they have to serve a function, and serve the people housed in them.

After all, the temporary king can only serve his function as a lamb: faultless and without sin.

Certain pericytes, known as microvascular pericytes develop around the walls of capillaries and help to serve this function.

Each room was to serve a function specific to the buildings adjacent to it.

They also serve a function as scavenger for impurities (e.g. water) in reactions that are sensitive to these impurities.