This article covers spell check in Wdesk.
Check Spelling as You Type
The spell check as you type feature can be turned on and off for documents and workbooks separately. The ability to turn spell check off helps to avoid problems with abbreviations commonly used in the workbook, and with foreign languages that would trigger a misspelling indicator in documents. Spell check is on by default in both documents and workbooks.
Advanced Document Properties
On the File tab, click the Properties button, then select Document Properties. On the Advanced tab you'll see that Check spelling as you type is selected.
If you do not have Check spelling as you type on for your document and want to check for spelling errors, go to the Review tab and click the Spelling button.