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substitutions: Document !literal tag #5381

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substitutions: Document !literal tag #5381

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15 changes: 15 additions & 0 deletions content/components/substitutions.md
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Expand Up @@ -151,6 +151,21 @@ In addition to the Jinja expressions, ESPHome supports a number of built-in func

{{< anchor "substitute-include-variables" >}}

## Disabling Jinja and substitutions

You can prevent ESPHome from substituting variables or processing Jinja by means of the `!literal` tag before any value:

```yaml
substitutions:
value: "Test Value"
lvgl:
widgets:
- label:
text: !literal "This is a ${value}"
```

In the above example, the value of the `text` property will be, literally, `This is a ${value}`.

## Substitute !include variables

ESPHome's `!include` accepts a list of variables that can be substituted within the included file.
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