Annotations provide a way to mark points on the graph with rich events. When you hover over an annotation
you can get title, tags, and text information for the event.
you can get event description and event tags. The text field can include links to other systems with more detail.
## Queries
## Native annotations
Grafana v4.6+ comes with a native annotation store and the ability to add annotation events directly from the graph panel or via the [HTTP API]({{<relref"http_api/annotations.md">}})
## Adding annotations
by holding down CTRL/CMD + mouse click. Add tags to the annotation will make it searchable from other dashboards.
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### Adding regions events
You can also hold down CTRL/CMD and select region to create a region annotation.
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### Built in query
After you added an an annotation they will be still be visible. This is due to the built in annotation query that exists on all dashboards. This annotation query will
fetch all annotation events that originate from the current dashboard and show them on the panel where they where created. This includes alert state history annotations. You can
stop annotations from being fetched & drawn by opening the **Annotations** settings (via Dashboard cogs menu) and modifying the query named `Annotations & Alerts (Built-in)`.
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### Query by tag
You can create new annotation queries that fetch annotations from the native annotation store via the `-- Grafana --` data source and by setting *Filter by* to `Tags`. Specify at least
one tag. For example create an annotation query name `outages` and specify a tag named `outage`. This query will show all annotations you create (from any dashboard or via API) that
have the `outage` tag.
## Querying other data sources
Annotation events are fetched via annotation queries. To add a new annotation query to a dashboard
open the dashboard settings menu, then select `Annotations`. This will open the dashboard annotations
