question: @ Override public void doctypeDecl ( String rootElement , String publicId , String systemId , Augmentations augs ) throws XNIException { fInDTD = true ; try { if ( fLexicalHandler != null ) { fLexicalHandler . startDTD ( rootElement , publicId , systemId ) ; } } catch ( SAXException e ) { throw new XNIException ( e ) ; } if ( fDeclHandler != null ) { fDeclaredAttrs = new SymbolHash ( ) ; } }
target:  Notifies of the presence of the DOCTYPE line in the document.