# CodeDiffChangeLineType

What happened to a line in a diff.

**Kind:** a string enum, used in responses.

## Values

| Value | Description |
|---|---|
| `"Added"` | The line was added. |
| `"Removed"` | The line was removed. |
| `"Existing"` | The line is unchanged, shown for context. |

New values can appear, so treat one you don't know as "something else", not as an error.

## Where it's used

- Inside [`CodeDiffChangeLine`](https://docs.maitento.com/reference/types/code-diff-change-line.md)