# CloudFormation template Description syntax
<a name="template-description-structure"></a>

The `Description` section (optional) enables you to include a text string that describes the template. This section must always follow the template format version section.

The value for the description declaration must be a literal string that is between 0 and 1024 bytes in length. You cannot use a parameter or function to specify the description. The following snippet is an example of a description declaration:

**Important**  
During a stack update, you cannot update the `Description` section by itself. You can update it only when you include changes that add, modify, or delete resources.

## JSON
<a name="template-description-structure-example.json"></a>

```
"Description" : "Here are some details about the template."
```

## YAML
<a name="template-description-structure-example.yaml"></a>

```
Description: > Here are some details about the template.
```