Add a subsystem that listen to SAMP messages and display corresponding objects.
Objects should be displayed on every image if they are contained within the image bounds.
Do not provide custom markers for now (i.e. provide a cross or box), but display the name of each object if it is available.
Provide a method to clear the whole object layer.
Anonymous
Aladin: http://aladin.u-strasbg.fr/
JSamp: http://software.astrogrid.org/doc/p/jsamp/1.1/index.html
(jsky has SAMP client capabilities)