BUILT-IN WOLFRAM LANGUAGE SYMBOL
is an option for Cell that specifies whether the contents of a cell should be explicitly displayed.
- With CellOpen->False, a small cell bracket is still shown to indicate the presence of a cell.
- Cells that are not open can still be evaluated automatically if you set InitializationCell->True.
Create a notebook with one open cell and one closed cell:
Find data in a closed cell: