Use the Add Existing Keyword dialog to view keywords used in other topics and add them to the current topic.
Index Keywords by Topic: Selects the topic. The list of keywords below the drop-down menu displays the keywords assigned to the selected topic. (When this dialog is first opened, it displays all keywords in the index.)
Selected Index Keywords for Current Topic: Displays keywords assigned to current topic.
Displays the Find
Topic dialog for identifying topics in the project.
Adds the selected keyword to the current topic.
Adds all keywords to the current topic.
Removes selected keyword from current topic.
Note: The Add Existing Keyword dialog opens when you select Add Existing at the Topic Properties dialog (Index tab) or from the Options menu at the Smart Index Wizard dialog (when viewing suggested keywords for a topic).