Hello hello
Small things make a big difference: colour vs color…
I am trying to get the text to be reviewed in Canadian english rather than British English. I would of course settle for US English if needed 
I can’t figure out where to change the dictionary of reference… Any help appreciated…
Best
Isabelle
Have a look at Edit > Spelling & Grammar > Show Spelling & Grammar (cmd-
In the dialogue that appears, there’s a dropdown box to change the language. By default it’s set to automatic, which picks up your system language (I think), but you can force it to any language you choose.
Does this work for you?
And I think for an even more persistent setting, the “Text” tab within the Keyboard System Preference pane is where you select which spelling dictionary all software should use by default. So if you prefer a particular variant of English, setting it there should do the trick.
