No process here writes a data store. Every flow ends at the user and is gone when the page closes. The processes are those of the OID Calculator. The reference documents of the left pane are documents, drawn on no diagram: Taxation of Treasuries is the foundation they rest on. 8.1 sends its rows to 8.3 as well as to 8.2: 8.3 lists the CUSIPs of the TIPS reference rows and states the first and last dates of the daily Ref CPI. 8.1 also states that status, or the load error, as charts and tables, to the user. 8.2 sends 8.3 the OID with its working, or in its place the reason the inputs have no result. The amber circles are shared modules (SharedModules.md), not process steps of this diagram.