Moving from Slide to Slide and Spell Check
PowerPoint's spelling check feature checks the entire presentation, including outline and notes, for spelling errors. It also gives you the option of selecting a specific word or paragraph to spell check.
If no words appear to be misspelled, it will say the spelling check is complete.
If a word appears to be misspelled, a dialog box suggests one or more alternatives for the word in question. Choose any suggested word by selecting the word and clicking Change. If you are sure the word in question is spelled correctly, click Ignore.