formatting

following a simple layout:

(three expressions at-the-start
  two in
  the middle
  many at the end)
(with-indentation (lambda (name)
    always proportional to nesting depth))

• a single, consistent pattern with a straightforward indentation rule
• simplifies prediction of the starting column for each new line
• nesting depth is visually apparent, clarifying structure and reflecting code complexity
• produces a more orderly and uniform appearance, reducing cognitive load