Not a jq expert, but my understanding is: `.[]` takes a list and turns it into a sequence consisting of each element of that list. `| x` applies the filter `x

Not a jq expert, but my understanding is: `.[]` takes a list and turns it into a sequence consisting of each element of that list. `| x` applies the filter `x` to that sequence, turning it into a new sequence. The outermost `[ ]` builds a list from that new sequence.