code: public void importRtfFragment(InputStream readerIn, RtfDocument rtfDoc, RtfImportMappings importMappings) throws IOException {
  	//public void importRtfFragment2(Reader readerIn, RtfDocument rtfDoc, RtfImportMappings importMappings) throws IOException {
  		if(readerIn == null || rtfDoc == null || importMappings==null) return;
  		this.init(TYPE_IMPORT_FRAGMENT, rtfDoc, readerIn, null, null);
  		this.handleImportMappings(importMappings);
  		this.setCurrentDestination(RtfDestinationMgr.DESTINATION_DOCUMENT);
  		this.groupLevel = 1;
  		setParserState(RtfParser.PARSER_IN_DOCUMENT);
  		this.tokenise();
  	}
docs: Imports an RTF fragment.
  
  @param readerIn
  The Reader to read the RTF fragment from.
  @param rtfDoc
  The RTF document to add the RTF fragment to.
  @param importMappings
  The RtfImportMappings defining font and color mappings for the fragment.
  @throws IOException
  On I/O errors.
  @since 2.1.3