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      "comparison": "C-lettering-before-after.svg",
      "physical_trial": "NOT_PERFORMED"
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    "legible_lettering.py": "24eb794fc91bff2b42cfe49093bb4979235b3eb00a245d2b8ab614299a88d320",
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    "counter": "Minimum of101 horizontal and101 vertical chords in central25–75% bands.",
    "aperture": "Widest escape on0.01mm grid, approximate uncertainty±0.03mm; not a maximum-inscribed-circle guarantee.",
    "spacing": "Exact BRep adjacent visible-glyph distance; planner's sampled spacing may differ by0.006mm.",
    "positive_stroke": "Parallel straight gauges and first erosion splitting two cores≥0.05mm² at0.005mm radius increments.",
    "limits": "Does not guarantee every mathematical curve tip, extrusion path, mechanical strength or successful print."
  },
  "sliced": false,
  "physical_trial": "NOT_PERFORMED"
}