diff --git a/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwaySnapMerger.h b/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwaySnapMerger.h
index 5f3d984..a272dfa 100644
--- a/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwaySnapMerger.h
+++ b/hoot-core/src/main/cpp/hoot/core/conflate/highway/HighwaySnapMerger.h
@@ -38,7 +38,10 @@ namespace hoot
class WaySublineCollection;
/**
- * Merges road geometries and tags
+ * Merges linear geometries and tags
+ *
+ * Note that this was originally written specifically for roads, but now is used by several linear
+ * script routines, including railway and river.
*/
class HighwaySnapMerger : public HighwayMergerAbstract
{