# Locking the notebook and changing the notebook name
## Locking the notebook
* You can lock the handwriting input of the notebook.
* This is a feature that prevents smart pen input to prevent the risk of overlapping handwriting on the page when using more than two of the same notebook.
> **Setting a notebook lock**
>
> 1. Select the notebook you want to lock.
> 2. Click the more button for the notebook you want to lock.
> 3. Select "Notebook lock".
> 4. Once selected, a lock icon will appear in the upper right corner of the notebook thumbnail.
> 5. When a notebook is locked, strokes made with the smart pen will not be displayed in the notebook.
## Unlocking the notebook
> Unlocking the notebook
>
> 1. Click the \[more] button on the locked notebook.
> 2. Click Unlock Notebook.
> 3. Click to release the locked notebook.
> 4. If you start taking notes on an unlocked notebook, you can receive handwriting input for normal handwriting.
## Changing the notebook name
> **Renaming a notebook:**
>
> 1. Click the "more" button for the notebook you want to rename.
> 2. Click "Rename notebook".
> 3. In the pop-up window for renaming the notebook, enter the new name in the input field.
> 4. Click the "Rename" button to complete the notebook renaming process.
{% hint style="warning" %}
**Notice**
Notebook names cannot include certain special characters such as "/" or "" in addition to "\_,-".
{% endhint %}
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