The "Spell Checking..." command can be invoked 2 ways:
By selecting Extra->Spell Checking... from the Menu bar
By clicking on the toolbar.
Spell Checking your document is controlled through a dialog box.
In this example, the mispelled word KWord found, was "youve". It has only one suggestion "you've".
There is a progress bar below the list of suggestions which tells you how much of the document has been spell checked.
From here you have eight options:
Replace - Replaces the current word with the suggestion. Only replaces this occurance.
Replace All - Replaces all occurances of the current word with the suggestion.
Ignore - Do not make any changes to this occurance. Ask me if this work appears again.
Ignore All - Do not make any changes to this or any other occurance. Do not ask me about this word again.
Add - Add the current word to the dictionary. STUFF!!!
Stop - Keep the current changes, but stop any further checking.
Close - Stop spell checking.
Help - Loads this help file.
When the entire document has been checked, KWord will return you to editing your document.