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Update the intro
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@ -9,9 +9,13 @@ sharing: true
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footer: true
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---
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The template helper enables one to mathematically manipulate values and use variables to extract values from JSON.
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The template helper enables one to mathematically manipulate values and use variables to extract values from JSON. If the entity has template support then the `value_template` key can be set in the `configuration.yaml` file.
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For a complete overview, check the [Jinja2 Template documentation](http://jinja.pocoo.org/docs/dev/templates/).
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```yaml
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value_template: '{% raw %}{{ value.x }}{% endraw %}'
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```
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For a complete overview, check the [Jinja2 documentation](http://jinja.pocoo.org/docs/dev/templates/).
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### {% linkable_title Accessing variables %}
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