# Observed user workflow

After an external bootstrap loaded `OrthoLoader.dll`, the loader created a `PluginsOrtho` Ribbon tab only when `isProjectCorrect` accepted the current Plant project. That predicate reads the first line of the local file `C:\AutoCAD User Support\Applications\app_netload.lsp` and compares its encoded project root with the active Plant project (`OrthoLoader/Ribbon.cs:380-405`).

`PluginsOrtho` has eight panels. Button IDs are commands; clicks call `Document.SendStringToExecute(command + "\n", ...)` (`Ribbon.cs:193-321, 526-529`). Examples: `PXP-AAV` is registered by `AutoAnnotateView/Commands.cs:546`; `PXP-OA` by `OrthoAutoAnnotate/Commands.cs:6444`.

The deployed `ico/*.png` files are runtime Ribbon resources. They are resolved from the loader assembly directory; in this deployment that is the UNC directory. The code has a null-image fallback when an icon is absent.

The tab and panels use stable IDs and lookup before creation. Button collections are appended when a missing panel is created; repeated project-open events can enable existing UI or create absent UI. The event is detached after first Ribbon initialization, but `CurrentProjectOpenedEvent` is retained for the process lifetime.