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  "checks": {
    "installedSourceMatchesApprovedArtifacts": true,
    "bodyIdentities": [
      "open circle",
      "open square",
      "open upright triangle"
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    "lines": "solid",
    "bothDirectPlans": "placed",
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  "limitation": "The three final observations remain close. Direct labels separate names, not the observations themselves. Responsive page reductions are presentation, not readability qualification.",
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