Hiding Cell Controls
 
Choose View → Cell Controls to hide or show the cell controls on a page.
 

Cell controls are the blue triangles and bullets at the left of every cell.  You can set a page to hide them .
Use the Page Format Inspector to hide the cell controls of empty cells, or cells with no children.
 

Choose Tools → Inspector to reveal the Inspector panel.

The Page Format Inspector contains settings for hiding cell controls .

Open the Page Format Inspector for me.

 
 

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