Topic keywords are keywords that are added to individual HTML topics. These keywords are not included in the index file (.HHK), although they are merged with index file keywords at run-time and displayed from the Index tab in the viewer.
When you work with keywords in the Index Designer, you will see both
topic keywords and index file keywords. The Index Designer identifies index
file keywords with a key icon and topic keywords with
a key/page icon
.
When you import topics into a project, all their keywords are automatically added to the index.
You can copy topic keywords to other topics and create index file keywords from them as well.
You can select topic keywords when adding keyword link controls to topics.
When you remove a topic from the project, all of its keywords are removed from the index. This makes it easy to maintain your keyword list because the index will not include unused keywords. (If the keywords are used by other topics, they remain in the index.)
You can merge topic keywords from multiple .CHM files into a master project.
Topic keywords cannot be cross-referenced to other keywords in the index (keywords that jump to other keywords). If you need to cross-reference keywords, create them as index file keywords.
Topic keywords are automatically sorted in the index (in alphabetical order). You cannot rearrange the order of keywords in the list.
Topic keywords can only link to local HTML topics and not to bookmarks or URLs and the topic can only be displayed in the default Help window (not in a custom or frame).
If you add index controls to topics, the index file (.HHK) for the control only displays index file keywords.
When you remove a topic from the project, all of its keywords are removed from the index. If you wanted to use these keywords with other topics, they will not be available to copy after the topic is removed.
Note: When you convert a WinHelp project file (.HPJ ) into an HTML Help-based Help system, the keywords in the WinHelp topics are saved as keywords in the index file.