What is the name of this kind of tree menu where descending levels of the tree are shown in panels from left to right. The tree is navigated by clicking elements.
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1Whatever it's called, it has some UX issues. This article talks about those issues and what some folks do about them. – Ken Mohnkern Aug 10 '17 at 20:29
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This is not a drop down. It's a fixed element in the page and it is navigated by clicking, not hovering. – Samuel Aug 10 '17 at 20:35
These are referred to as Miller Columns.
