Readonly cell in Jupyterlab

[Marius Nørgaard]

Looking at the changelog for version 0.35.0 of JupyterLab, there is the following item:

• A notebook cell can now be readonly, reflecting its enabled metadata. (#5401, #1312)

However, I'm having trouble finding an example of how to actually use this. Is there a setting in JupyterLab, or somewhere else I can set a cell to be readonly?

I've tried editing the .ipynb file directly, inserting 'enabled' and 'editable' fields in the metadata field of a cell. 'enabled' is used in the changelog, while the linked commits appear to use 'editable':

this._readOnly = this.model.metadata.get('editable') === false;

My edit of the notebook file looks like this:

"metadata": {
    "enabled": false
   },


Any guidance is appreciated.