Board
whiteboard:boardA board — one named whiteboard. Its pins are the members of `set:wb:whiteboard:<board>:pins`; the Set IS the board, so there is no second place a board's contents are kept.
A board — one named whiteboard. Its pins are the members of `set:wb:whiteboard:<board>:pins`; the Set IS the board, so there is no second place a board's contents are kept.