When searching for words in help topics, you can have each occurrence of the word or phrase highlighted in the topics that are found. To highlight all instances of a search word or phrase, click Options on the toolbar, and then click Search Highlight On.
Notes: To turn off this option, click Options on the toolbar, and then click Search Highlight Off.
If you are viewing a long topic, only the first 500 instances of a search word or phrase will be highlighted.