Asynchronous is an option for WolframAlpha that determines whether to use the asynchronous features of the Wolfram|Alpha API.

SynchronousInitialization is an option for Manipulate, DynamicModule, and related functions that specifies whether or not to evaluate the expression given as the setting for ...

Button[label, action] represents a button that is labeled with label, and evaluates action whenever it is clicked.

There will probably be times when you want to stop Mathematica in the middle of a calculation. Perhaps you realize that you asked Mathematica to do the wrong thing. Or ...

IncludePods is an option for WolframAlpha that determines specific pod IDs to include in the results.

Mathematica has integrated interactive and programmatic access to the full power of the Wolfram|Alpha computational knowledge engine, using it to allow free-form linguistic ...

WolframAlpha["query"] sends query to Wolfram|Alpha and imports the output.WolframAlpha["query", format] imports the output according to the specified format.

Introduction to Dynamic Advanced Dynamic Functionality

SynchronousUpdating is an option for Manipulate, Dynamic, and related functions that specifies whether or not to evaluate their contents synchronously.

"Introduction to Manipulate" and "Introduction to Dynamic" provide most of the information you need to use Mathematica's interactive features accessible through the functions ...