The title reminded me of bidding to Network Rail in UK to help them manage keeping diagrams of the railway up to date showing schematics/not-to-scale with thing

The title reminded me of bidding to Network Rail in UK to help them manage keeping diagrams of the railway up to date showing schematics/not-to-scale with things like: * logical track segment IDs * points * switches/controls for electricity for segments * lights * other key items This was more about health and safety, being able to schedule maintenance etc and ensure electric rail turned off. Fascinating to discover that the "current" (HEAD) version of the documents for certain parts of the track were from the original Victorian era (pre-1900) diagrams when things like tunnels were first created! Fun stuff...