This namespace indexes AEI Corporation's work by function (the job the control system performs), while industries: indexes the same work by who buys it. A single use case recurs across industries: condition monitoring is the same signal-processing and networking problem on a textile spindle, a packaging servo and a pipeline pump.
The depth is not repeated here. Each use-case page is a nav-grade entry point that points into the protocol, operating-system and signal-processing pages that carry the engineering:
industries:<industry> -> use-cases:<function> -> technology:<protocol>
Each page lists the industries it recurs in and the search terms it is indexed under, because most of these cross several: condition monitoring is one problem on a textile spindle, a packaging servo and a pipeline pump, and an AGV is the same vehicle whether it runs in a mill or a warehouse.
All thirteen pages are written (July 2026). Each one states the engineering constraint that defines the use case, then points into the protocol, operating system and signal-processing pages that carry the detail.