Set Up an Initialization Cell
Designate cells in a notebook to be evaluated automatically before the first user evaluation after the notebook is opened.
It is sometimes useful to run initialization code before the content of a notebook is used. Any cell marked as an initialization cell will be automatically evaluated before the first user evaluation after the notebook is opened.
To mark a cell as an initialization cell, select the cell bracket and choose Cell ▶ Cell Properties ▶ Initialization Cell ():
When the notebook is subsequently opened, the initialization cells are evaluated before the first user evaluation:
It is sometimes useful to run initialization code before the content of a notebook is used. Any cell marked as an initialization cell will be automatically evaluated before the first user evaluation after the notebook is opened.
To mark a cell as an initialization cell, hover near the cell bracket, click the cell menu icon, and choose Set as Initialization:
When the notebook is subsequently opened, the initialization cells are evaluated before the first user evaluation: