That should read "signal to proceed" - "Green light" is no longer to be used in case it confuses or offends the colour vision impaired.

Like TJ, I bemoan the disappearance of some humour. The best jewish jokes used to be made by people of that very faith; the best Irish jokes by Irish folk. They used to be good-natured (not the working men's clubs kind of humour). Groucho Marks would have been out of a job today.

And talking about the great Groucho, I heard a side-splitter last week on the radio, as part of the commemoration of 75 years since he hit the scene: While hosting a quiz show on Armed Forces Radio at the start of his career, he asked a contestant "tell us something about yourself". The discussion continued as follows:

"Well, I have a wife and thirteen children"
"THIRTEEN children? Why so many?"
"Because I love my wife".
"I love my cigar too, but I take it out now and then".

Aahhh, those were the days...