These would help prevent someone trying to be "helpful" from turning on your gas supply before it is properly inspected and for pilot lights to be properly lit.
Please explain your point about pilot lights being lit. I know about zero regarding that issue. So, start from zero, thanks.
I may be wrong but By properly lit i think he means multiple things. First for water heaters with a pilot light there is a array of steps you have to take before lighting them. Often the instructions are found on a sticker on the heater. Also the Oven and stove pilot lights are properly lit if they do in fact have pilot lights witch mostly the older ones do.
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