This quality is also found in a more widely available Shafer cab called One Point Five, signifying the winery's generation-and-a-half tradition.

WSJ: The Near-Accidental Brilliance of Shafer Vineyards

The current eight-year-old system runs from green, signifying a low threat, to red, meaning severe.

BBC: US may scrap colour-coded terror alerts

Early-warning antennae should twitch when they detect the word smart, signifying a return to old ways but with lessons learnt: bankers are already talking about smart securitisation.

ECONOMIST: Way beyond English