Suppose you have a two-level index entry, with only one instance of a second level for the first-level text. In printed books, the usual practice is to combine the first- and second-level text into one first-level entry. By default, DITA2Go follows this practice for HTML-based Help indexes. If you expect to merge indexes from two or more Help projects, you might not want the levels combined.
To keep DITA2Go from combining levels for such index entries:
[Index]
; CombineIndexLevels = Yes (default) or No (always break at colon)
CombineIndexLevels=No
When CombineIndexLevels=Yes, if there is only one item at the last level of a series of multi-level index entries, DITA2Go removes the colon before the last item and replaces it with one of the following, depending on what character immediately precedes (or follows) the level-break colon:
For example, suppose an index marker contains:
and there are no other first-level index entries for “tomatoes”. This entry would become:
When CombineIndexLevels=No, DITA2Go breaks index entries at all unescaped colons.