Check the spelling of your callouts. When you select text, you can use the right-click to choose Check Spelling…. This does not work if you select a call out. You might think that that will stop you from checking the spelling in a callout note. If you select a call out object (or even several of them) then you can go to Text on the Menu bar and choose Check spelling… This will then check the spelling of all of the selected called out notes.