LLALineListDocument realizes the standard document interface definitions (IDocument, IDocumentItemCollection, IDocVersionComposition, IReferencedDocumentCollection and IObject). Since the line list document is not graphical, LineListComponent also realizes the standard non-drawing interface definitions (INonDrawingDocument and INonDrawingItemCollection).
The primary interface definition for the line list document, and the only interface definition unique to the line list document, is ILineListDocument.