API reference / Common / Engine types / OptionalContent

Type Alias: OptionalContent

type OptionalContent = 
  | {
  group: OptionalContentGroupId;
}
  | {
  membership: OptionalContentMembership;
}
  | {
  expression: VisibilityExpression;
};

A single optional-content scope: what an /OC sequence holds, or an image or form whose own /OC it is.

Scopes around one object AND together: the object is visible iff every one independently resolves to visible. This mirrors PDF's nested BDC scoping.