Double click on a text box containing text
Right-click on selected text to bring up Spelling option

Click on Spelling...
If misspelled, words will be underlined in red and Spell Checker window appears showing misspelled word.

Select correct to correct the spelling of a word
Click on close button to set changes.

Double click on text box where text will be entered
Right-click on text entry box to bring up Spelling option
Select Check Spelling As You Type
Enter text in text box.
Misspelled words are underlined in red after word is typed.

Click on Speech to hear selected text read aloud.