Notebooks have a known issue with [tenants](../../security/access-control/multi-tenancy/). If you open a notebook and can't see its visualizations, you might be under the wrong tenant, or you might not have access to the tenant at all.
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An OpenSearch Dashboards notebook is an interface that lets you easily combine live visualizations and narrative text in a single notebook interface.
A notebook is a document composed of two elements: OpenSearch Dashboards visualizations and paragraphs (Markdown). Choose multiple timelines to compare and contrast visualizations.
Common use cases include creating postmortem reports, designing runbooks, building live infrastructure reports, and writing documentation.