> ## Documentation Index > Fetch the complete documentation index at: https://docs.rawchunks.space/llms.txt > Use this file to discover all available pages before exploring further. # Use the editor > Select a section, listen to lanes, and find the workstation tools. Open a **READY** Studio track with **EDIT**, or use **MY-PAGE → MY SONGS → ••• → EDIT**. Editing an already minted version opens a new editable version based on it. Rawchunks editor with Master waveform, lanes, extracted takes, transport and floating Studio toolbox. ## Read the arrangement **Master** holds the song's main audio. **LANES** holds stems and added parts. **EXTRACTED** holds takes from processing and extraction. Select a lane to focus the tools on it. The toolbox's context chip shows the selected lane or take and the time range. Its clear button returns focus to **Main Mix** and clears the range. Expand or collapse **LANES** and **EXTRACTED** with their section headers. After separation, the colored instrument badges on Master select a stem; they don't start playback. Master's **M** silences the original recording while enabled mounted takes keep playing. ## Select and listen Click the waveform to seek. Drag over it to select a range. Drag the start or end handles to adjust a boundary; drag the small move handle to move the whole range. | Control | What it does | | - | - | | **PLAY / PAUSE** | Play or pause the arrangement | | **STOP** | Stop and return to the beginning | | **RTZ** | Seek to the beginning | | **AUDITION** | Play the selected range once | | **LOOP REGION** | Repeat the selected range | | **LOOP** | Toggle looping of the selection, or the song when no range is selected | | Lane play icon | Listen to that lane alone | | **M / S** | Mute or solo a lane | Outside text fields: **Space** plays or pauses, **Shift+Space** auditions a range, **L** toggles looping, and **Home** or **0** seeks to the start. The timeline's **SNAP** button currently does not snap waveform selections. Place boundaries by listening and moving the handles. The **BPM** field is not a reliable live tempo control for Keys and Drums yet. [Live Code's RUN PATTERN](/app/live-code) applies the displayed BPM. Check the played rhythm before lining it up with another track. ## Open the tool you need The floating toolbox offers **STUDIO**, **MIXER**, **KEYS**, **DRUMS**, **LIVE CODE**, **FX RACK**, **SAMPLER**, and **HISTORY**. Drag its header to move it, resize from the corner, or collapse it to **TOOLS**. On phones it starts collapsed. The board's **AUDIO**, **DRUMS**, **KEYS**, and **CODE** buttons add a source-song clip or an empty pattern lane. Use **SAMPLER** to import your own audio file. | Work | Guide | | - | - | | Change a section | [Rework](/app/rework) | | Pull out a section or stems | [Extract and Separate](/app/extract-separate) | | Add an instrument | [Layer](/app/layer) | | Continue or change a song's style | [Extend and Restyle](/app/extend-restyle) | | Compare and keep a take | [Mount and merge](/app/takes-merge) | | Build your own parts | [Keys](/app/keys), [Drums](/app/drums), [Live Code](/app/live-code), [Sampler](/app/samples) | | Balance the sound | [Mixer and effects](/app/mixer-effects) | | Save a project milestone | [History and snapshots](/app/history) | This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.