| StrataOutputTrait | Shared option reading, rendering and confirmation for the command suite. |
| StrataCommands | The commands an operator runs on a working site. |
| StrataDiagnosticCommands | The commands that measure rather than change. |
| StrataMaintenanceCommands | The passes that make stored history cheaper, and the two that remove parts of it. |
| StrataRestoreCommands | The commands that read history back and the commands that write it over the live site. |