900 Years of Tree Diagrams, the Most Important Data Viz Tool in History. Trees are a data viz tool that has outlived empires and endured huge upheavals in the arts and sciences.

MS XML Notepad 2007<BR><BR>edit: just to clarify, this is an xml file editor that has a tree view pane on the left.You can right click and expand the whole tree, or leave it collapsed. ••• ...

The image showcases the industry’s progress by including a comparatively miniature “Petroleum Tree of 60 Years Ago” diagram in the bottom left-hand corner.