diff --git a/autodoc/autodoc.py b/autodoc/autodoc.py
index 42cc26d..ca0699b 100644
--- a/autodoc/autodoc.py
+++ b/autodoc/autodoc.py
@@ -8,6 +8,16 @@ import common as doc
 from doc_state import *
 
 
+def __doc_app_state__(state, tab=" │  "):
+    res = ""
+    if "+Threads" in state:
+        for i, tname in enumerate(state["+Threads"]):
+            if tname[0] == "+":
+                ch = "├─●" if i < len(state["+Threads"]) - 1 else "╰─●"
+                res += f"{tab}  {ch} {tname[1:]}\n"
+    return res
+
+
 def __doc_application__(label, app):
     mdapp = f'\n## Real-time application "{label[1:]}"\n\n'
     mdapp += f"Below are descrbed the states and threads of the real-time application {label[1:]}.\n"
@@ -21,7 +31,7 @@ def __doc_application__(label, app):
         tab = " │  " if i < len(states) - 1 else "    "
         if label[0] == "+":
             mdapp += f" {ch} {label[1:]}\n"
-            mdapp += doc_app_state(obj, tab)
+            mdapp += __doc_app_state__(obj, tab)
     mdapp += "```\n"
     for label, obj in states.items():
         if label[0] == "+":