WebMail includes a spell checker for the message body. To spell check the text of the message body, click one of the "Spell Check" buttons. The edit page will refresh and the message will be re-displayed. The spell checked message will be labelled "Spell Checked Version." Only those words not found in the spell checker's dictionary will be editable. The editable words are displayed in drop-down menus.
To edit a word in a drop-down menu, either erase the relevant part of the word or choose one of the words offered in the drop-down menu's list. When you are satisfied with the spelling of the message, click the "Recompose" button. The page will refresh and will return to the regular editing mode.