protected StringBuffer prepareFile(JoeTree tree, DocumentInfo docInfo) {
		//String lineEnding = Preferences.platformToLineEnding(docInfo.getLineEnding());
		
		StringBuffer buf = new StringBuffer();
		
		// write the prelude to data
		// TBD
		
		// write the data
		//Node node = tree.getRootNode();
		//for (int i = 0; i < node.numOfChildren(); i++) {
		//	buildOutlineElement(node.getChild(i), lineEnding, buf);
		//}
		//
		
		// write the postlude to data
		// TBD
		
		return buf;
		} // end method prepareFile