Hi Kestutis,
find_system is the command that is easier way(though slow if the models are large) that can come in handy.
for instance to get the list of blocks you could try this on a simple model like : >> vdp >> find_system('vdp', 'Type', 'Block')
This should return a cell array of all the blocks.
Like wise you could go through the help for find_system to discover more options.
Hope this helps !!!
--sreeram
