I could have asked this question personally to my respected colleague who gave me a valuable answer to the question, “Is the ‘tame the infinite becoming an idiom or a popular phrase,” which I posted yesterday, but I thought this deserves an independent question.
He, the answerer gave me the comment saying, “(It’s) 10-4. Copy. That’s a good example of how the phrase could be applied, and would be well-understood,” to the question, “Can I say ‘the Palestinian territorial issues is an effort in trying to tame the infinite’, “which I added to the yesterday’s question.
I saw the word “10-4 copy” for the first time. So I searched for its meaning on Google, and found a certain clue from the following text in www.answerbag:
“A lot of the 10 codes are different from city to city and state to state. For example a 10-50 in Indiana is a traffic accident, but in Texas it’s a murder. I personally mix and match; sometimes I say “10-4”, other times I say “clear“.
It seems “10-4” refers to a call sign for something. But what does it represent for? Why “10-4” is combined with “clear”? Can I say “10-4 answer /message/ report/ plan” in describing clear answer /message/ report/ plan”?