scufl_graph cluster_sources Workflow Inputs cluster_sinks Workflow Outputs RCSBSuffix RCSBSuffix AddSuffix AddSuffix RCSBSuffix->AddSuffix RCSBPrefix RCSBPrefix AddPrefixToID AddPrefixToID RCSBPrefix->AddPrefixToID FetchPage FetchPage WORKFLOWINTERNALSINK_pdbFlatFile pdbFlatFile FetchPage->WORKFLOWINTERNALSINK_pdbFlatFile AddSuffix->FetchPage AddPrefixToID->AddSuffix WORKFLOWINTERNALSOURCECONTROL WORKFLOWINTERNALSOURCE_pdbID pdbID WORKFLOWINTERNALSOURCE_pdbID->AddPrefixToID WORKFLOWINTERNALSINKCONTROL