void centerViewActualDiagram();
void saveActualDiagram(std::string &content, const std::string &path); //DFCH
void loadDiagram(ifstream &inputStream, const std::string &path); //DFCH
void centerViewActualDiagram();
void saveActualDiagram(std::string &content, const std::string &path); //DFCH
void loadDiagram(ifstream &inputStream, const std::string &path); //DFCH