The Wolfram Language allows you to specify in detail what should happen when you press to evaluate a cell in a notebook, or to evaluate an expression in place.

Evaluation Control

Evaluatable — whether a cell or other expression is evaluatable

CellProlog, CellEpilog — expression to evaluate before, after evaluating a cell

CellEvaluationFunction — function to apply when evaluation is requested

DynamicUpdating — whether dynamic objects should update

Notebook-Level Control

InitializationCell — mark a cell to be evaluated when a notebook is opened

NotebookAutoSave — automatically save a notebook after each evaluation

Notebook Formatting

OutputSizeLimit — maximum size for explicit output (default: $OutputSizeLimit)

CellAutoOverwrite — overwrite output cells when new ones are generated

CellEvaluationDuplicate  ▪  CellEditDuplicate

Context Control

Evaluation ▶ Notebook's Default Context — localized context by notebook, cell, etc.

CellContext — localized contexts for symbols in a cell

Remote Kernels

Evaluation ▶ Notebook's Kernel — kernel to use for a notebook

Evaluation ▶ Kernel Configuration Options — configure remote kernels

Evaluator — the name of the evaluator to use for a cell or expression

Dynamic Evaluation

Evaluation ▶ Dynamic Updating Enabled — whether to do dynamic updating