Is it possible to set a container as the default for new links that originate from outside Firefox? For example links I click on my email or messages apps, or share with my computer using airdrop? I would like to create a container called Default or General for example, and set that as the default for all links without an existing container, or where there isn't a container open. This would mean that, unless I specifically open a new tab without a container, everything is contained. That will help to ensure that cookies and site tracking data is contained by default - making it easier to clear cookies (by deleting the container) and reducing the effect of any website links that I am sent - even well meaning friends might send friendly and useful websites with pernicious cookies and trackers (or versions of weblinks that are not covered by the existing containers, eg uk.linkedin.com v www.linkedin.com ) I see in the release notes just now that there's "Make “default container” entry keyboard navigable " - which has raised my hopes that this feature is possible - is it somewhere in the menus that I am not finding?