--- a/src/utils/hldata.h
+++ b/src/utils/hldata.h
@@ -24,7 +24,9 @@
/** Processed/expanded terms and groups. Used for looking for
* regions to highlight. Terms are just groups with 1 entry. All
- * terms in there are unaccented, and the list may include values
+ * terms are transformed to be compatible with index content
+ * (unaccented and lowercased as needed depending on
+ * configuration), and the list may include values
* expanded from the original terms by stem or wildcard expansion.
*/
std::vector<std::vector<std::string> > groups;