> For the complete documentation index, see [llms.txt](https://docs.memorystring.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.memorystring.app/more/shortcuts.md).

# Keyboard shortcuts

MemoryString keyboard shortcuts for projects, editing, view, playback, and help.

Menu items show their shortcuts too. This page lists the main keys.

## Project

| Key     | Action                |
| ------- | --------------------- |
| **⌘N**  | New project           |
| **⌘O**  | Open…                 |
| **⌘S**  | Save                  |
| **⇧⌘S** | Save As…              |
| **⌘W**  | Close window and quit |
| **⌘Q**  | Quit                  |
| **⌘E**  | Export Movie…         |

The red close button also quits. Untitled work with content asks **Save** / **Don't Save** / **Cancel** first.

## Edit

| Key                | Action                                                                                                                                                                     |
| ------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **⌘Z** / **⇧⌘Z**   | Undo / Redo (**⌘Y** also Redo when not typing)                                                                                                                             |
| **⌘V** / **⌘C**    | Paste / copy media (plain text while a caption or title field is focused)                                                                                                  |
| **⌘⌫**             | Delete selected media or music                                                                                                                                             |
| **⌘D**             | Set Duration… (on a group: the whole group's length)                                                                                                                       |
| **Esc**            | Deselect slides, Library cards, and music tracks. Also leaves Outtakes **Peek**                                                                                            |
| **⇧⌘C**            | Set Caption (one selected Library or Timeline card; off when more than one card is selected)                                                                               |
| **⌘1** / **⌘2**    | Set Start Here / Set End Here (selected video or soundtrack, at the playhead. [audition the Audioline](/build-your-movie/music.md#audition-the-audioline) first for music) |
| **⌘]** / **⌘\[**   | Rotate Clockwise / Rotate Counter Clockwise                                                                                                                                |
| **⇧⌘]** / **⇧⌘\[** | Flip Horizontal / Flip Vertical                                                                                                                                            |

**Edit → Auto Caption Untitled Slides** and **Edit → Sort by Date Taken** (Oldest First / Newest First / Import Order, no Shuffle) are in the menu. **Library** calendar and empty-Library right-click add **Shuffle**. The **Library** Show menu (stacked-slides icon) has **Make Long story short**, **Keep Best Shots…**, **Auto Trim Videos…**, **Mute Noisy Videos**, **Mute All Videos**, **Unmute All Videos**, **Fit Show to Music**, and **Extend to Fill**. Right-click a video for **Auto Trim**. Undo with **⌘Z**. See [Auto detection](/build-your-movie/auto-detection.md#auto-trim).

## View

| Key                      | Action                                                                                                                                               |
| ------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------- |
| **⌃⌘S**                  | Toggle Sidebar                                                                                                                                       |
| **⌥⌘I**                  | Show / Hide Inspector                                                                                                                                |
| **⌥⌘S**                  | Switch to Studio Mode / Switch to Essential Mode                                                                                                     |
| **⌥⌘+** / **⌥⌘-**        | Timeline zoom in / out                                                                                                                               |
| **⌘+** / **⌘-** / **⌘0** | Increase / Decrease / Default **UI** text size. App chrome, **Library** cards, and **Timeline** strip height (not Timeline zoom, not slide captions) |

## Playback

| Key             | Action                                                    |
| --------------- | --------------------------------------------------------- |
| **Space**       | Play / Pause (not while a text field is focused)          |
| **←** / **→**   | Nudge playhead                                            |
| **⇧←** / **⇧→** | Larger steps                                              |
| **⌘→** / **⌘←** | Next / Previous Slide                                     |
| **⌥⌘←**         | Go to Start, or click **Go to Start** beside **Timeline** |

## Help

| Key    | Action                                          |
| ------ | ----------------------------------------------- |
| **⌘/** | MemoryString Help… (opens this site)            |
| **⌘,** | Settings… (MCP Server sheet on the main window) |

**Help → Show Walkthrough** replays the first-run tour. **Help → Rate MemoryString…** opens the App Store review page. **Help → Send Feedback…** opens Mail. **Help → Report a Problem…** emails a sanitized crash report (no media filenames).

While typing an opening or closing title, **Shift+Enter** starts a new line. Long lines wrap on their own.

## Tips

**Space** and arrow keys still work while you edit title text in some cases. **⌘V** / **⌘C** stay plain text while a caption or title field is focused. Undo and Redo cover most Inspector changes. **Playback → Play** or **Pause** also toggles playback. **⌘D** applies to every selected slide. **⌘+** / **⌘-** / **⌘0** change UI text size for **Library** cards and **Timeline** strip height. They do not change slide caption size.


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