Revolutionary knowledge-based programming language.
Computation-powered interactive documents.
Semantic framework for real-world data.
Central infrastructure for Wolfram's cloud products & services.
Software engine implementing the Wolfram Language.
Instant deployment across cloud, desktop, mobile, and more.
Technology-enabling science of the computational universe.
Knowledge-based, broadly deployed natural language.
Curated computable knowledge powering Wolfram|Alpha.
is an option for Cell that specifies whether a cell group can be closed normally.
Create a notebook where any cell group can be closed normally:
The cell group can be closed normally:
Create a notebook where the "heading" cell group cannot be closed:
Now the "heading" cell group cannot be closed:
AllowReverseGroupClose CellGrouping Grouping