No process here writes a data store. Every flow ends at the user and is gone when the page closes. 7.1 sends its rows to 7.3 as well as to 7.2: 7.3 bounds the date range by the extent of all three series. 7.1 also states the data status, as charts and tables, to the user. CPI series is defined in the Data Dictionary §6.6. The amber circles are shared modules (SharedModules.md), not process steps of this diagram.