This function is one of the advanced features available with the  Advanced License.

 

Keywords are essential words or phrases that are linked to topics that describe their meanings or usage. In on-line (HTML) manuals, the keyword list is embedded as a special tab. An example is shown below.

 

           

 

 

You can turn on the keyword feature (index tab) in the HTML Template &  Layout dialog.

Add new keywords and assign them to help topics in the bottom-left Keywords pane.