# DiffChangeType

**Kind:** Enum

**Source:** [`atloria-monorepo/apps/api/src/document/dto/compare-document.dto.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/apps/api/src/document/dto/compare-document.dto.ts#L44)

Diff change types emitted by the document comparison service.

NOTE: `MODIFIED` is retained for backward compatibility with older clients
but is no longer produced by `calculateTextDiff`. The new LCS-based diff
emits every edited line as a paired `REMOVED` + `ADDED` entry so the old
and new content are both preserved on the response.

## Values

- `ADDED`
- `REMOVED`
- `UNCHANGED`
- `MODIFIED`