In article ,
MJA writes:

I suspect that there cannot be universal symbols, as they are
dependent on language and culture. Would, say, a crossed spanner and
screwdriver be universally understood?

Years ago when I worked for GPT, they produced a piece of equipment
which had green light to indicate all was OK, a thumbs-up sign shape.
Anyway, it turns out that in some European country, thumbs-up means
f**k-you.

--
Andrew Gabriel
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