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Added doc content for variables inspector code change by Hugo (#30408)

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* Created the Inspect variables topic.

* Check in changes.

* Added relrefs.

* Added Hugh's suggestion.
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title = "Inspect variables"
keywords = ["grafana", "templating", "documentation", "guide", "template", "variable"]
aliases = ["/docs/grafana/latest/reference/templating"]
weight = 125
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# Inspect variables and their dependencies
The variables page lets you easily identify whether a variable is being referenced (or used) in other variables or dashboard. In addition, you can also [add]({{< relref "variable-types/_index.md" >}}) variables and [manage]({{< relref "manage-variable.md" >}}) existing variables from this page.
> **Note:** This feature is available in Grafana 7.4 and later versions.
![Variables list](/img/docs/variables-templates/variables-list-7-4.png)
Any variable that is referenced or used has a green check mark next to it, while unreferenced variables have a orange caution icon next to them.
![Variables list](/img/docs/variables-templates/variable-not-referenced-7-4.png)
In addition, all referenced variables have a dependency icon next to the green check mark. You can click on the icon to view the dependency map. The dependency map can be moved. You can zoom in out with mouse wheel or track pad equivalent.
![Variables list](/img/docs/variables-templates/dependancy-map-7-4.png)

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title = "Manage variables"
keywords = ["grafana", "templating", "documentation", "guide", "template", "variable"]
aliases = ["/docs/grafana/latest/reference/templating"]
weight = 120
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# Manage variables
The variables page lets you [add]({{< relref "variable-types/_index.md" >}}) variables and manage existing variables. It also allows you to [inspect]({{< relref "inspect-variable.md" >}}) variables and identify whether a variable is being referenced (or used) in other variables or dashboard.
## Move
You can move a variable up or down the list using the up and down arrows respectively.
## Clone
To clone a variable, click the clone icon from the set of icons on the right. This creates a copy of the variable with the name of the original variable prefixed with `copy_of_`.
## Delete
To delete a variable, click the trash icon from the set of icons on the right.