statements write a string and then a number, the Boolean value TRUE, and the NULL
keyword to the output file. Both values are written in the second-level array container,
which are output as a list of values. The WRITE CLOSE statements first close the most
recently opened container, which is the second-level array container, and then close the
first-level array container.
write values "Nested array sample";
write open array;
write open array;
write values "In a nested array";
write values 1 true null;
write close;
write close;
Write a final value. The WRITE VALUES statement writes two strings to the output file
that are in the top-level ...
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