BUILT-IN MATHEMATICA SYMBOL
- Reverse closing a cell collapses all cells in the group so that only the selected cell is visible.
- AllowReverseGroupClose should be set in the head cell of the cell group.
- With the default setting AllowReverseGroupClose->Automatic, only Input/Output cell groups can be reverse closed.
Create a notebook where the Input/Output cell group can be reverse closed:
Create a notebook where the "heading" cell group can be reverse closed around the "text" cell:
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