Go to https://lucid.app/ and log in to your account.

Select the diagram you want to add notes to.

Click the "Notes" button in the top right corner of the page.

Click the "Add Note" button in the bottom left corner of the page.

Enter your note in the text field that appears.

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If you are creating a diagram in Lucidchart, you may want to add notes to provide additional information or instructions. Notes can help explain the purpose of the diagram, provide additional details, or provide instructions on how to use the diagram. Adding notes to your diagram can help make it easier to understand and use.

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