diff --git a/BPM/graphic_editor/mermaid_etc/PlantUML/example.md b/BPM/graphic_editor/mermaid_etc/PlantUML/example.md
index d86037d1..42ecf7eb 100644
--- a/BPM/graphic_editor/mermaid_etc/PlantUML/example.md
+++ b/BPM/graphic_editor/mermaid_etc/PlantUML/example.md
@@ -21,3 +21,6 @@ https://github.com/plantuml/plantuml
 
 ### example 
 https://github.com/okunev-e/plantuml_examples
+
+### C4
+- https://habr.com/ru/companies/usetech/news/676196/