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- Triangle that collapse cells 1 answer
How can I create a button which sits next to the cell, like so: http://i.imgur.com/ZFkgn5q.jpg
When you click the button it expands the cell, like this (note the cells on the right): http://i.imgur.com/3fyvUOJ.jpg
I can't find any code inside the Mathematica notebook for creating the button.
Duplicate of: Triangle that collapse cells