Parameters
- text
- String that contains the text being spell-checked.
- start
- Position being checked within the text string.
- ignore
- IgnoreOptions that specifies types of words that should be ignored.
- previousWord
- Last word retrieved by the parser (used to detect duplicates).
Return Value
A CharRange object that represents the next word to be spell-checked, or null if all the text has been spell-checked.