Reply drawing
When button in `show' page is clicked, the scribble is automatically redrawn from blank.
Paste scribbles on your blog
Put the latest scribble
ex)
<script src="http://susan.appspot.com/load_canvas"></script>
Put someone's latest scribble
ex)
<script src="http://susan.appspot.com/load_canvas?author=andyjpn@gmail.com"></script>
Put a particular scribble given by its key
A scribble key is taken from the `show' page url linked from the timestamp in the index page.
ex)
<script src="http://susan.appspot.com/load_canvas?key=agVzdXNhbnINCxIGU3Ryb2tlGI8FDA"></script>