SPELL CHECK

(Did you know ArchiCAD uses Microsoft Word for Spell check?)

Maybe you have tried to use 'Spell Check' and been unconvinced the tool is doing anything? Perhaps it isn't!
Open Word and go to Options - under the 'Proof' tab ensure that the 'Ignore words in UPPERCASE' checkbox is unchecked.

As we do most notation in UPPERCASE it could well be that spellcheck has ignored all your notes!