I've been looking at some of the symbols on a digital tachograph printout.  There's one of an old lady with knitting needles - it's called a pictogran.

Many years ago I spent a night-out in a mining village in Wales.  I parked up on the industrial estate where I was due to tip the following morning and walked to the local pub.  Sitting at a table in one corner, all alone, I saw an old man with a concave face.  Although he sat by himself all night he didn't buy a single beer - every man that walked into the place stood him a pint.  By the end of the evening, when I could stand the intrigue no longer, I asked the landlord about the lonely man with the concave face.  He told me that years ago, when all the local men worked down the pit, a terrible accident occurred below ground and the man now sitting in the corner held up the roof of the mine while all the men escaped.  "That's why", he said, "He doesn't have to put his hand in his pocket". "But what about the concave face", I asked. The landlord said, "That's where they wedged him in with a sledge-hammer".