default_setting_overrides.json

{
    "@jupyterlab/docmanager-extension:plugin":
    {
	"defaultViewers":
	{
	    "markdown": "Jupytext Notebook",
	    "myst": "Jupytext Notebook"
	}
    },
    "@jupyterlab/translation-extension:plugin":
    {
	"locale": "fr_FR"
    },
    "@jupyter/nbgrader:formgrader":
    {
	"local_config": true
    }
}