comment-in-operator-chain.hs

everyOperandAnnotated =
  base -- what we started from
    + delta -- what was added
    - refund -- and what came back

annotatedOperators =
  base
    + -- the adjustment
      delta
    - -- the reimbursement
      refund

remarkBetweenOperatorAndOperand =
  opening
    <> -- said once
      -- and never twice
      closing

lastOperandOnly =
  first
    `mappend` second
    `mappend` third -- and no further