Many properties of notebook appearance and behavior can be customized by setting the values of options.

Interactively...

Open the Option Inspector

Choose Format Option Inspector ():

Select the notebook whose properties you want to set

Select the notebook whose properties you want to set from the popup menu at the upper left:

Locate the property you want to set

Set the property

Click the property value to enter a new one, or click the icon to select a value interactively:

Programmatically...

Use SetOptions to set properties of a notebook. EvaluationNotebook refers to the notebook that contains the evaluation:

Use SetOptions to set properties of a notebook. EvaluationNotebook refers to the notebook that contains the evaluation: