Add a bulleted or numbered list in Numbers for iCloud

You can create lists formatted with bullets, numbers, or letters.

Type one or more items in your list, and separate each item with a paragraph break (by pressing Return on a Mac or Enter on a Windows computer).
Select the text you want to include in the list.
In the Format sidebar on the right, click the Style button near the top.
Click the Bullets & Lists pop-up menu near the bottom of the sidebar, then choose an option.
Continue typing your list, separating each item with a paragraph break.
Each new line is preceded by a bullet or number in the format you selected.
To end the list, choose None from the Bullets & Lists pop-up menu, then continue typing text without a list format applied.

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Numbers User Guide for iCloud