// Test spacing.
#set page(width: 50pt, margin: 0pt)

#let x = square(size: 10pt, fill: eastern)
#stack(
  spacing: 5pt,
  stack(dir: rtl, spacing: 5pt, x, x, x),
  stack(dir: ltr, x, 20%, x, 20%, x),
  stack(dir: ltr, spacing: 5pt, x, x, 7pt, 3pt, x),
)