THPDFArchivalPreservationOptions Record

Unit: HPDFArchivalConversion

Configure bounded text and vector preservation on top of base PDF/A-4 conversion

THPDFArchivalPreservationOptions = record
  Limits: THPDFArchivalConversionOptions;
  SynthesizeMissingAppearances: Boolean;
  RemoveEmbeddedFiles: Boolean;
  AllowSignatureInvalidation: Boolean;
  AddOCRToImagePages: Boolean;
  OCREngine: IHPDFOCREngine;
  OCROptions: THPDFOCRTextLayerOptions;
  MaxLossEntries: Integer;
  MaxTextCodeUnits: Integer;
  MaxContentTokens: Integer;
  class function Default: THPDFArchivalPreservationOptions; static;
end;

Member	Default and meaning
`Limits`	Existing archival defaults for pages, objects, staged bytes, stream work, cancellation and checkpoints; raster pixel budgets apply to optional OCR recognition
`SynthesizeMissingAppearances`	True, allows compatible native markup or field appearance generation; unsupported or mismatched generation rejects publication
`RemoveEmbeddedFiles`	False, reject attached files unless their removal is explicitly enabled
`AllowSignatureInvalidation`	False, reject signature fields unless invalidation and removal are explicitly enabled
`AddOCRToImagePages`	False, optionally recognise pages without extractable text and append an invisible text layer
`OCREngine`	Nil, use built-in bounded ASCII OCR; an application engine can provide broader recognition coverage
`OCROptions`	Native OCR defaults with skip-pages-with-text enabled and a new optional-content group disabled; the converter also retains existing OCR layers and applies archival limits
`MaxLossEntries`	1,024, also bounds native repair and validation report entries
`MaxTextCodeUnits`	1,048,576, bounds extracted source and output text and expected synthesised appearance text
`MaxContentTokens`	4,000,000 per native validation pass

Initialise the record with Default; zero-initialised budgets are invalid

See the preservation profile for supported fonts and colours, appearance rules, explicit losses, cumulative stream-work budgets, publication guarantees and validation limits