To specify where an index-entry link should point:
[Index] ; KeywordRefs = Keyword (default), File, or Para (at start) KeywordRefs = Keyword
Selecting an item in the resulting index takes you to one of the locations listed in Table 16-1, depending on the setting you specified for KeywordRefs.
When you specify KeywordRefs=Keyword or KeywordRefs=Para, DITA2Go generates index link destinations of the following form:
topicfile.htm#objectID
where objectID is an internally generated ID number.
RoboHelp lacks mid-topic index links
RoboHelp does not recognize the mid-topic hash (fragment) identifiers that specify mid-topic index destinations. Therefore, you must use the following setting if you plan to use RoboHelp to generate WebHelp:
[Index] KeywordRefs=File
As a result, index links always put you at the beginning of the referenced topic in WebHelp.
Merged CHM files cannot use index anchors
When an index entry in HTML Help points to more than one topic, the viewer displays a Topics Found dialog box that lists the topics by name. However, in merged CHM files, if the index entries for a slave file point to anchored locations (topicfile.htm#anchor), the Topics Found dialog box displays the index entry instead of the destination. To avoid this problem, use the following setting:
[Index] KeywordRefs=File