THPDFHeadlessFormDataOptions

THPDFHeadlessFormDataOptions = record
  MaxBytes, MaxFields, MaxObjects, MaxDepth, MaxValues: Integer;
  MaxValueCodeUnits, MaxTotalCodeUnits: Integer;
  CancellationToken: THPDFCancellationToken;
  RichTextDocumentURI, RichTextStyleSheetTitle: UnicodeString;
  RichTextStyleSheets: THPDFHeadlessRichTextStyleSheets;
  class function Default: THPDFHeadlessFormDataOptions; static;
end;

Use Default before changing individual limits; all limits must be positive and MaxDepth must not exceed 64

Member	Default	Bound
MaxBytes	16777216	Complete encoded input and emitted output bytes
MaxFields	65536	Terminal Unicode field records
MaxObjects	100000	Parsed PDF objects, XML nodes and attributes, model entries and generated FDF hierarchy nodes
MaxDepth	64	Serialized syntax, nested fields and bounded indirect reference resolution
MaxValues	65536	Text values within one field
MaxValueCodeUnits	1048576	One Unicode string or FDF byte-name length
MaxTotalCodeUnits	4194304	Aggregate names, parsed text and field values
CancellationToken	nil	Cooperative parsing, emission and document-operation cancellation
RichTextDocumentURI	Empty	Base URI for caller-supplied rich-text CSS resources
RichTextStyleSheetTitle	Empty	Optional selected stylesheet set title
RichTextStyleSheets	Empty	At most 256 preloaded external CSS resources

XML parsing counts textual attributes and resolved qualified names as processing occurs, so aggregate usage can exceed only the terminal field payload; the limit bounds complete parsing work

FDF nesting includes dictionary and Kids-array levels around each qualified name component, so serialized depth can exceed the number of field-name components

Document methods cap byte, field and depth limits with the loaded document options and require a shared cancellation token

External stylesheet options apply to rich FDF/XFDF decoding and document imports, with the same operation limits and cancellation token