{
  "title": "Drafting markup and drawing dimension revision data for AI",
  "source_page": "https://fiund.com/industries/drafting-dimension-revision-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "The issued drawing resolves a wrong-unit draft without changing a neighboring dimension",
    "context": "An original display-stand sketch uses artificial dimensions and dummy issue stamps. It provides no engineering, manufacturing or permitting instruction.",
    "records": [
      [
        "DD1",
        "Practice markup",
        "Change dimension D1 from 20 mm to 25 mm. Similar label D1A remains 8 mm."
      ],
      [
        "DD2",
        "Unissued draft B",
        "D1 entered as 25 cm by mistake; D1A remains 8 mm."
      ],
      [
        "DD3",
        "Authorized issue C",
        "D1=25 mm; D1A=8 mm. Issue C supersedes the draft and references the markup."
      ]
    ],
    "question": "Which value and unit does the authorized issue support for each dimension, and why should the numeric 25 in draft B not be treated as equivalent?",
    "answer": "DD3 supports D1 at 25 mm and D1A at its unchanged 8 mm, matching DD1's scoped markup. DD2's 25 cm has the same digits but a different unit and is an unissued erroneous draft. The authorized issue resolves that discrepancy; it does not change the similarly named D1A. Cite feature, unit and issue identity rather than matching on a bare number or label prefix.",
    "failureModes": [
      "Ignoring a unit error because the numeric value matches the markup.",
      "Applying D1's change to D1A or selecting an unissued draft over the authorized sheet."
    ],
    "fields": [
      [
        "Exact dimension identifier",
        "Separates similar labels."
      ],
      [
        "Value and unit",
        "Preserves dimensional meaning."
      ],
      [
        "Markup, draft and issue relationship",
        "Shows which revision is authorized."
      ]
    ],
    "holdout": "Provide a new authorized inch-based sheet with its own explicit conversion note. Require source- and unit-specific comparison instead of rejecting all changed units automatically.",
    "boundary": "Use original geometry and dummy stamps. Exclude client CAD, title blocks, libraries and permit drawings."
  }
}