What I did: wrote difficult words

What happened: when I was writing a note I think I wrote some word with errors

What I expected: I want to know if it’s possible to check grammar and orthography. I know it is not a text editor like Word, but I want to know if it is possible

Things that might be helpful to know (Agenda version, OS and model, etc):

Yes, it should detect spelling issues, note that on Mac you might need to turn it on (with the cursor in the note blinking, though it will then remember your choice) under Edit > Spelling and Grammar.