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CellGroupData[{cell1,cell2,…}]

is a low-level construct that represents an open group of cells in a notebook.

CellGroupData[{cell1,cell2,…},status]

represents a cell group that is open or closed according to the value of status.

CellGroupData[{cell1,cell2,…},{i1,i2,…}]

represents a cell group with cells at positions i1, i2, … open.

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CellGroupData

CellGroupData[{cell1,cell2,…}]

is a low-level construct that represents an open group of cells in a notebook.

CellGroupData[{cell1,cell2,…},status]

represents a cell group that is open or closed according to the value of status.

CellGroupData[{cell1,cell2,…},{i1,i2,…}]

represents a cell group with cells at positions i1, i2, … open.

Details

  • Cell groups are typically opened and closed by double‐clicking their cell brackets or opener icons.
  • status may take the value of Closed or Open. False and True may also be used.
  • CellGroupData[cells,Dynamic[status]] will reset the value of status when the cell group is interactively opened or closed. It will open or close the cell group when the value of status is set.
  • When cells are entered into a notebook, they are automatically placed in groups unless CellGrouping->Manual is set.

Examples

Basic Examples  (4)

Create a notebook that has automatic cell grouping:

Wolfram Language code: nb = CreateDocument[{TextCell["heading", "Section"], TextCell["text", "Text"]}];

NotebookRead shows the CellGroupData structure:

Wolfram Language code: SelectionMove[nb, All, Notebook];NotebookRead[nb]

Create a document with manually grouped cells:

Wolfram Language code: nb = NotebookPut[Notebook[{CellGroupData[{Cell["text 1", "Text"], Cell["text 2", "Text"]}, Open]}, CellGrouping -> Manual]];

Create a group with only the second cell open:

Wolfram Language code: nb = NotebookPut[Notebook[{CellGroupData[{Cell["text 1", "Text"], Cell["text 2", "Text"], Cell["text 3", "Text"]}, {2}]}, CellGrouping -> Manual]];

Create a group with its first and third cells open:

Wolfram Language code: nb = NotebookPut[Notebook[{CellGroupData[{Cell["text 1", "Text"], Cell["text 2", "Text"], Cell["text 3", "Text"]}, {1, 3}]}, CellGrouping -> Manual]];
Wolfram Research (1996), CellGroupData, Wolfram Language function, https://reference.wolfram.com/language/ref/CellGroupData.html (updated 2007).

Text

Wolfram Research (1996), CellGroupData, Wolfram Language function, https://reference.wolfram.com/language/ref/CellGroupData.html (updated 2007).

CMS

Wolfram Language. 1996. "CellGroupData." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2007. https://reference.wolfram.com/language/ref/CellGroupData.html.

APA

Wolfram Language. (1996). CellGroupData. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/CellGroupData.html

BibTeX

@misc{reference.wolfram_2026_cellgroupdata, author="Wolfram Research", title="{CellGroupData}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/CellGroupData.html}", note=[Accessed: 12-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_cellgroupdata, organization={Wolfram Research}, title={CellGroupData}, year={2007}, url={https://reference.wolfram.com/language/ref/CellGroupData.html}, note=[Accessed: 12-June-2026]}