Tabula Rasa

Tabula Rasa is a chalkboard
Which sits on your Mac OS X desktop.
It has eight colors from which you can choose,
Although you usually need but one.
It also has an eraser to drag.
You can click on the button on the top
To nail it to the desktop, dropping it
From any level to the lowest one
And making it disregard Exposé.
If you keep it under windows as such,
You can look to the Dock icon to see
Its contents, as they are reflected there.
Hold onto the Dock icon to call forth
A menu, from where you can opt to bring
It forth at login, thus rendering it
To be an all-purpose reminder tool.