---
title: Edit
description: Shared headless text buffers used by editd and Ced, with revision checks, transactions, operational transforms, per-origin undo, anchors and search.
---

# Edit

Shared headless text buffers used by [editd](../editd/README.md) and
[Ced](../ced/README.md). This promotion has two external owners: the
service is the authoritative buffer store; the app uses the same revision,
operation, anchor and position contracts for local echo and rebasing. No
Bus connection, clock, renderer or async runtime is required by this
library.

The Microsoft Edit buffer implementation remains in
[`vendor/msedit`](https://github.com/markc/mixos/tree/main/vendor/msedit),
with its licence, upstream revision and retained commit-failure, Unicode
and convergence tests. This library supplies the revision CAS,
transactions, single-authority OT, per-origin undo, anchors and search API
above it.

Source provenance is recorded in the repository's `NOTICE`.
The source is [`libs/edit`](https://github.com/markc/mixos/tree/main/libs/edit).