> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DEE echo output column

> Reference for the `echoOutputColumn` output column type in a DEE order, which writes a constant `value` into every extracted row, including its `header`, `prefix`, and `suffix` properties.

## JSON structure

```json theme={"languages":{"custom":["/engine/python-sdk/6.2/languages/pycon.tmLanguage.json"]}}
"columns": [
  {
    "@type": "echoOutputColumn",
    "header": "head", 
    "value" : "echo value",
    "prefix": "",
    "suffix": ""
  },
```

## Property details

| Property | Values | Default Value |
| - | - | - |
| header | String - Header of column | |
| value | String - Value to put in rows | |
| prefix | String - a prefix to add to all levels | |
| suffix | String - a suffix to add to all levels | |