As I am on holiday in Gambia I think that this confused the works hence 5 *only.

How do get this to work with the spell checker? That only looks at US "English"

Doesn't work. Switched to cybrkyd's pack and it works instantly. I admire Mozilla for challenging the Chrome hegemony, and always stick with Firefox despite it's many, many flaws, but damn is it hard to love them sometimes. Constant own goals and strange blunders.

Anyway, use cybrkyd's pack.

Extensif et précis, ce module est un parfait dictionnaire