# Versions & history

> Versions in InnerHook, a lyrics writing app: up to three takes of every section (A, B, Scratch), Version History, and undo of your own changes.

Canonical: https://innerhook.com/docs/versions/
Last updated: 2026-10-06

Every section can hold three texts: **Version A**, **Version B** and **Scratch**. Only one is shown in the song at a time, so you can try a different second verse without losing the first. Each version also keeps its own history of earlier texts you can go back to.

## Where to find it

- **The version button** in a section's gutter, right of the label chip, shows the version in view: **A**, **B** or **S**. It stays faint while the section has only Version A.
- **⋮** beside it has **Copy this to**, **Copy from**, **Version history** and **Clear this version**.
- **Versions** in the side panel shows the versions of the section the caret is in, with **Version History**.
- The `/` menu's **This section** group lists the other versions and **Version history**.

## A, B and Scratch

- **Version A** is the main text of the section.
- **Version B** is a second take to compare against it.
- **Scratch** is a notepad for the section: half-lines, rhymes you might use, a line you cut but can't let go of.

The song always shows one version of each section, and that is what Preview, copying, [Hear it sung](https://innerhook.com/docs/hear-it-sung/) and your co-writers see. Different sections can show different versions.

### Step by step

1. Click the version button (**A**) of a section and pick **Version B**. An empty version says *empty* in the menu.
2. Write the new take. Version A is kept, untouched.
3. Switch back and forth from the same button to compare.
4. When B wins, choose **Promote to A** in the version menu. B's text becomes Version A and the old A moves to B, so nothing is lost.

From **⋮** you can also:

- **Copy this to → Version B** (or another): copy the text in view over another version.
- **Copy from ← Version A** (or another): replace the text in view with another version's.
- **Clear this version**: empty the version in view.

Whatever a copy or a clear replaces goes into that version's history first.

## Version History

1. Open it from **⋮ → Version history**, from **Versions → Version History** in the side panel, or with `/` → **Version history**.
2. On the left, **Now (unsaved)** is the current text, and below it the earlier ones, newest first, each with its time and a short summary.
3. Click one to read it on the right.
4. Under **Copy this version to:** pick **A**, **B** or **Scratch**. InnerHook shows the changes and asks **Replace content in Version A?**; choose **Replace** (or **Cancel**).

A snapshot is saved by itself when you stop typing in a section for 30 seconds, move the caret to another section, switch versions or leave the page, and before a copy or a clear. When you join two sections with Backspace, the lower one's other versions and history go into the upper one's history.

> **History is per section**
>
> Version history is kept for each section and version, not for the song as a whole. If [Autodraft](https://innerhook.com/docs/autodraft/) replaced the whole song, the header's **⋮** has **Restore previous song** to bring the earlier song back.

## Undo and redo

- **Undo:** ⌘ Z (Ctrl+Z on Windows and Linux).
- **Redo:** ⌘ ⇧ Z (Ctrl+Shift+Z on Windows and Linux).

Each command is one step: a moved, deleted or retyped section, a version switch, Detect structure or an accepted AI suggestion comes back whole with one undo.

**In a shared song, undo only undoes your own changes.** If a co-writer is typing in the chorus while you rework the bridge, your undo takes back your bridge edits and leaves their chorus alone. See [Co-writing live](https://innerhook.com/docs/co-writing/).

## Limits

> **Limits**
>
> - Three versions per section: Version A, Version B and Scratch.
> - Up to 20 history snapshots per version; the oldest go first.
> - Undo history lasts while the song is open. Opening another song starts a fresh one.
> - Someone who can only read or comment can't switch versions or open Version History.