Module LocalitySource

* Managing locality

* Positioning locality for commands supporting discharging and export outside of modules

For commands whose default is to discharge and export: Global is the default and is neutral; Local in a section deactivates discharge, Local not in a section deactivates export

For commands whose default is to not discharge but to export: Global in sections forces discharge, Global not in section is the default; Local in sections is the default, Local not in section forces non-export

* Positioning locality for commands supporting export but not discharge

For commands whose default is to export (if not in section): Global in sections is forbidden, Global not in section is neutral; Local in sections is the default, Local not in section forces non-export