Whyteboard is a painting whiteboard application that runs on Linux
and Windows, that allows the annotation of PDF, PostScript documents
and various image formats with common drawing tools (pen, rectangles,
ellipses, text). A history of your drawing is stored, facilitating the
replaying of your drawing.

Whyteboard enables tabbed painting, with multiple sheets that
can be drawn upon, with each sheet having its own live-updating
thumbnail. This allows the editing of multiple documents or images
inside a single instance of Whyteboard. Each sheet has its own undo
and redo operations as well as its own history replay list.

Note: You will need to enable GNOMEPRINT support in wxPython in order
to start this application.