Added manual on yEd

English/Graph/README.md

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+# How to view and modify the roadmap in graphML format
+
+GraphML — is an XML-based file format for graphs. It is supported by many applications for viewing it.
+
+For example, you can use [yEd](https://www.yworks.com/products/yed) to view graphML file and modify it as you want.
+
+![](./example.png)

README.md

@@ -29,6 +29,8 @@ Before you start exploring the map, it's recommended to read the articles listed
 * [Miro - C++ Developer Roadmap](https://miro.com/app/board/o9J_lpap34Q=/)
 * [GraphML - C++ Developer Roadmap](English/Graph/roadmap.svg)
 
+More information on how to view and edit graphML file is stored [here](English/Graph/README.md)
+
 # License and conditions
 The roadmap is published under the license **CC BY-NC-SA 4.0**: [RUS](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.ru) || [ENG](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en). In a nutshell:
 

Russian/Graph/README.md

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+# Как просматривать и модифицировать карту в graphML формате
+
+GraphML — язык описания графов на основе XML, который поддерживают различные приложения для их просмотра.
+
+Например, можете открыть graphML файл в [yEd](https://www.yworks.com/products/yed) и модифицировать карту, как вам захочется.
+
+![](./example.png)

Russian/README.md

@@ -29,6 +29,8 @@
 * [Miro - C++ Developer Roadmap](https://miro.com/app/board/o9J_lFH_iBs=/)
 * [GraphML - C++ Developer Roadmap](Graph/roadmap.svg)
 
+Информаци о том, как просматривать и модифицировать роадмапу в формате graphML есть [здесь](./Graph/README.md)
+
 # Лицензия 
 Карта распространяется по лицензии **CC BY-NC-SA 4.0**: [RUS](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.ru) || [ENG](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en). Если вкратце: