how to use margin viewer

[gyancse08]

I see there is plugin called margin viewer in the list: http://annotatorjs.org/plugins/ .
But when I add the plugin in the annotator nothing happens. Also there is no documentation around how to use it. Where can I find it?

[tilgovi]

@habeanf is the author of that plugin

[gyancse08]

It will be great if @habeanf can help with documentation for this plugin.
Are there any css sheet required to download?

[habeanf]

I never finished it :/