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 a symbol returned when notebook input is canceled, for example from a dialog box.
Display a dialog window with a cancel button:
When the button is clicked, the value $Canceled is returned as the value of the DialogInput:
$Aborted Null CancelButton DefaultButton