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(Change 4) Added 'X' to the closer poster in detailed view in upper right corner.
Further Discussion
Another thing noticed through prototyping but not called out explicitly above is that users asked to interact with the board using a pen had different input and gesture expectations than those asked to interact using touch. For example, touch users often expected to scale images using the same gestures familiar to them from smartphones while this was not a common sight for someone using a pen who expected only a single touch point. Many of the differences observed are articulated in work done by Ken Hinckley at Microsoft Research in his exploration of pen vs. touch input (http://kenhinckley.wordpress.com/publications/). Therefore, as we gain additional information about the capabilities and limitations of the hardware with which we will be prototyping we will factor these more subtle observations in as well.