# Staging & commit

Your uncommitted work is in **Local Changes**, at the top of the history.

![Local changes with their diff](/img/view-diff-1200.webp)

## Stage and unstage

Local Changes has two lists, **Unstaged** and **Staged**. Select one or several files, then use the Stage or Unstage
button of the list, its **All** box, or the context menu (**Stage**, **Unstage**, **Copy**, **Discard**).

tratto stages **whole files**. Staging single hunks or lines is not built yet.

## Write the commit

Type the subject and, below it, the description, then press **Commit**. Tick **Amend** to replace the last commit
instead. The **✦** button proposes a message from the staged changes and **Explain changes** describes them: see
[Explain changes & commit messages](/docs/ai/commit-messages).

## Undo and reset

- **Repository › Undo Last Commit**, or **Undo** on the commit, moves the branch back to the parent and keeps the
  changes in your working copy (a mixed reset).
- **Repository › Reset Branch to Selected Commit…** offers **Soft**, **Mixed** (the default) and **Hard**. A hard
  reset over uncommitted changes asks you to tick that you mean it.

## Discard, and get it back

**Discard** on an unstaged file copies it into tratto's Trash first. **Repository › Trash…** lists what was discarded
and restores it. The Trash keeps up to 512 MiB for 30 days. Changes bigger than that cannot be kept: tratto says so and
asks before it discards them without a copy.

## The diff

The bar above the diff switches between **side by side** and **unified**, shows invisible characters, wraps long lines,
ignores whitespace, shows more or less context (three lines at a time) or the full file, and jumps between hunks.
Images get a diff of their own. **Compare to Local Changes** on a commit diffs it against your working copy.

The defaults for these live in **Settings › Diff**.