"The blue pins are where we were evicted," he said.

There were an awful lot of blank spaces awaiting a red or a blue pin.

"I assume the blue pin marks the spot where Scout's transmissions zilched."

Red pins show where books have been left and blue pins are for found books.

She pointed at a blue pin in the centre of Brighton, surrounded by green, purple, yellow and white pins.

"I'm trying for a blue pin now," he said.

After 25 years they received a bronze and blue pin.

He pushed a blue pin into the map.

"That," he said as he stuck the pin next to a blue pin at another table, "I can do."

Over her breast is a blue, heart-shaped pin with a number.