diff --git a/api/s25_vertices.py b/api/s25_vertices.py
index 0228927..932de52 100644
--- a/api/s25_vertices.py
+++ b/api/s25_vertices.py
@@ -76,8 +76,9 @@ def delete_vertex(name: str, cs: ChangeSet) -> ChangeSet:
 
 
 #--------------------------------------------------------------
-# [EPANET2][IN][OUT]
+# [EPA2][IN][OUT]
 #   id  x  y
+# [EPA3][NOT SUPPORT]
 #--------------------------------------------------------------
 def inp_in_vertex(section: list[str]) -> ChangeSet:
     vertices: dict[str, list[dict[str, float]]] = {}