There are no requests to log. It's not a web app. It's installed on at least one and up to many networked windows machines on a given customer site, where that

There are no requests to log. It's not a web app. It's installed on at least one and up to many networked windows machines on a given customer site, where that network is isolated and contains numerous IP and serial cable connected pieces of specialist hardware (no two customers have the same sets of hardware); we make them dance together. There is no interaction outside that network.