[trouble clef]

What is the syntax to operate on a group of selected objects?

tell application "OmniGraffle Professional 5"
	tell canvas of front window
		
		-- somehow set selection?
		repeat with thisGraphic in every graphic -- with however a selection is specified
			tell thisGraphic
				-- do whatever is needed
			end tell
		end repeat
	end tell
end tell

Any clues?