\startenvironment env_interactivity

\setupbodyfont[sans]

\setupinteraction
    [state=start,
	menu=on
     color=brown,
	style=bold]

	  \defineinteractionmenu
	    [mymenu]
	    [right]
	    [state=start,
	     align=middle,
	     background=screen,
	     frame=on,
	     width=\marginwidth,
	     style=smallbold,
	     color=]
	  \setupinteractionmenu
	    [mymenu]
	    [{Content[content]},
	     {\vfill},
	     {Stop[ExitViewer]}]


\stopenvironment