From the Tools menu, select Spell Check All Topics. The spell checker displays each topic in your project one-by-one and suggests alternative spelling for words that may be incorrect.
If you don't want to spell check a topic when the spell checker displays it, click Skip Topic.
In Not in Dictionary, enter the correct word or select one of the suggested replacement words.
To change a single instance of a spelling error, click Change.
To ignore the word and continue spell checking, click Ignore.
To ignore all instances of the word, click Ignore All. (This ignores all instances of the word in all topics and adds the word to the Ignored Words list for each subsequent topic in which it occurs. However, if you type the word in a new topic or in a topic that did not contain the word before (when you ran Spell Check All and selected Ignore All for that word), it will not be in that topic's ignore list.)
To exit spell check, click Close. Any changes you have already made are retained.
To add the word to your custom dictionary, click Add.
When the spell checker is finished, a dialog box displays the message, The spelling check is complete.
Note: Currently the spell checker only scans text in HTML topic files (.HTM files) and not text the table of contents or other files in the project.