* Editor
  * Create rest of markup lang definitions
  * Hook up format selector
* Create Compare Revisions Page (like, when comparing the two)
* Create Search Results Page
* Create Revert page
* Write Editor/Sidebar implementation notes for Rick
* Write print.css
* Re-add inline help for more obscure syntax rules.
* Find some clever way to represent page hierarchy.
* Inline preview?

HIERARCHY
  _Footer.md
  _Sidebar.md
  Page1.md
  projects/
    Page2.md (uses root sidebar)
    _Footer.md
  experiments/
    _Sidebar.md
    Page3.md (uses footer.md)

Images work the same way.  You can keep similar pages in a directory with their own images.