log.error("Number format exception in track line (ylinemark): " + nextLine);
}
} else if (key.equals("ylineonoff")) {
trackProperties.setDrawYLine(value.equals("on"));
} else if (key.equals("windowingfunction")) {
WindowFunction wf = WindowFunction.getWindowFunction(value);
trackProperties.setWindowingFunction(wf);
} else if (key.equals("maxfeaturewindow") || key.equals("featurevisibilitywindow") ||
key.equals("visibilitywindow")) {
try {
int windowSize = Integer.parseInt(value);