...
public void drawLine(double x1, double y1, double x2, double y2, int width, int color);
/*
Get all annotations at a particular slice
*/
public Annotation[] getAnnotationBySlice(int z);
/*
Submit a new annotation
*/
public Annotation submitAnnotation(double[][] trace, int width, int color, String userName, String objectName, String ontoURI, String description)
/*
Get the MenuBar object
*/
public MenuBar getMenuBar();
/*
Popup a customized panel on the canvas
*/
public void popupPanel(com.google.gwt.user.client.ui.Panel panel);