Keywords
Keywords are used to create the Index for the Help system. Everything that you put in the topics keywords will be used in the index construction. Also words that are at least 5 letters long will also be included in the index.
If the word is in the topic and its longer then 5 letters, it does not need to be included in the keywords. Its better to include words that are similar or phrases.
Keywords are also used in the search bar of the help system.
You can add keywords on the editor pages or on the table of contents page. YOu may also remove them.