@keita Thanks. In the end I worked out how to do it with a custom field and then added a function to add the class where I wanted it.
@hazardwarning My journal stays on my desk. It's bad enough checking this thing in bed.
@hazardwarning And you'll be able to see clearly whatever you put in it, so there's that.
Time to get stuck into something difficult. That's what Friday afternoons are for.
@jws You mean there is no One True Way? I'm not sure I can cope with that much freedom.
@jws Thanks. For now, I'm going to stash the changes, because I failed to start with a new branch. :(