# Adding item or form comments in the Data Viewer

You can only review comments—you cannot add or edit item-level or form-level comments—in the Data Viewer Comments View. To add or edit a comment, you must navigate to a CRF.

For more information, see:

- Navigating from the Data Viewer to a CRF.
- Entering a comment on a form item.
- Entering a comment on a form.

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