If the option Check spelling as you type is enabled, the spelling is checked as the text is typed, and the spell check dialog box will open automatically when an unknown word is typed.
Note: If you enter a calculation into a cell, its spelling will not be checked. This would not make sense with calculation formulas.
To enable this on-the-fly spell checking, choose the command File | Options 
, switch to the Language tab and enable the option Check spelling as you type.
Every time you type a word, PlanMaker now quickly looks up that word in its dictionaries. As long as you type words that the spell check knows, nothing visible happens. If you type an unknown word, however, the spell check displays a dialog box.
This dialog box is similar to the dialog box for the manual spell check presented in the previous section. You can read there about how to use this dialog box.
You will notice that there is also a SmartText button in the dialog box, which can be used to create a SmartText entry from the word. You will learn more about this feature in the SmartText section.