# When a screenplay with locked scene numbers moves between Trelby, Starc, Beat and afterwriting, where are the numbers written and where are they read?

- id: art_01M5MDK21CFG93ZFHFYFX1KYNP
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T01, T03, T04 · tags: none
- updated: 2026-10-23T13:00:49.037Z
- url: https://veyrul.com/articles/art_01M5MDK21CFG93ZFHFYFX1KYNP

At the pinned commits, Starc (when its scene-number option is on) and Beat write a Number attribute on FDX scene-heading paragraphs, Trelby writes none, and none of the four importers read (Starc, Beat outside tag definitions, Trelby, afterwriting) take a scene Number from FDX, so locked scene numbers such as 12A are at risk of renumbering on any FDX round trip through these tools (static reading).

At the pinned commits, Starc (when its scene-number option is on) and Beat write a Number attribute on FDX scene-heading paragraphs, Trelby writes none, and none of the four importers read (Starc, Beat outside tag definitions, Trelby, afterwriting) take a scene Number from FDX, so locked scene numbers such as 12A are at risk of renumbering on any FDX round trip through these tools (static reading).

Curator qualifications: Starc and Beat Fountain #n# handling (E2) and afterwriting scene-number config (E7) not reinspected. Behaviour of the receiving tool's auto-numbering is not established; a numbered round-trip fixture would confirm. Static reading of importer/exporter code; no files round-tripped.

Limitations: Static reading of importer/exporter code; no files round-tripped.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://github.com/story-apps/starc/blob/7784620095f8a04f07dab3b88dd12b488d6ec973/src/corelib/business_layer/export/screenplay/screenplay_fdx_exporter.cpp",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/story-apps/starc/blob/7784620095f8a04f07dab3b88dd12b488d6ec973/src/corelib/business_layer/export/screenplay/screenplay_fountain_exporter.cpp",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/story-apps/starc/blob/7784620095f8a04f07dab3b88dd12b488d6ec973/src/corelib/business_layer/import/screenplay/screenplay_fdx_importer.cpp",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/lmparppei/Beat/blob/3e2b67f8c8f7c7f951b380e8c52669f76a926e28/Frameworks/BeatFileExport/BeatFileExport/Export/Modules/Final%20Draft/BeatFDXExport.m",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/lmparppei/Beat/blob/3e2b67f8c8f7c7f951b380e8c52669f76a926e28/Frameworks/BeatFileExport/BeatFileExport/Import/Modules/Final%20Draft/FDXImport.m",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/ifrost/afterwriting-labs/blob/876d1b1584a777e3c83ae8dd04ac3a0a19200344/docs/clients.md",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/ifrost/afterwriting-labs/blob/876d1b1584a777e3c83ae8dd04ac3a0a19200344/js/utils/converters/finaldraft.js",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/trelby/trelby/blob/86079b162e6514754ce0a2f3ea323eaca81146e7/trelby/myimport.py",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    },
    {
      "url": "https://github.com/trelby/trelby/blob/86079b162e6514754ce0a2f3ea323eaca81146e7/trelby/screenplay.py",
      "note": "starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116)"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] At the pinned commits, Starc (when its scene-number option is on) and Beat write a Number attribute on FDX scene-heading paragraphs, Trelby writes none, and none of the four importers read (Starc, Beat outside tag definitions, Trelby, afterwriting) take a scene Number from FDX, so locked scene numbers such as 12A are at risk of renumbering on any FDX round trip through these tools (static reading). · locator: starc screenplay_fdx_exporter.cpp lines 55-72, 120-130 at 77846200; Beat BeatFDXExport.m line 427 at 3e2b67f8; Beat FDXImport.m lines 221-242; starc screenplay_fdx_importer.cpp; trelby myimport.py at 86079b16; afterwriting js/utils/converters/finaldraft.js at 876d1b15; trelby screenplay.py generateFDX (as in CA-B116) · source: https://github.com/story-apps/starc/blob/7784620095f8a04f07dab3b88dd12b488d6ec973/src/corelib/business_layer/export/screenplay/screenplay_fdx_exporter.cpp

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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