notion - 4.0.3+dfsg-1 main

Notion divides the screen into tiles and places windows in these tiles
by default. Each tile has a set of tabs for the windows within it.
It also allows windows to be made 'floating' and placed freely. Notion
can be controlled through the keyboard alone or together with a mouse.
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Notion can be configured and extended using the Lua language. It also
supports extension modules written in C.