The room dedicated to these topics is the most complex in terms of coordinating the content covered by such a vast and intricate narrative. In the railway world there have always been significant yet extremely niche topics, which are only comprehensible to people “in the trade” and struggle to draw much attention. And yet in the history of railways they have all made a huge contribution, in their own small way, to the growth of a world which has evolved almost uncontrollably over the centuries.
The railway pursues progress and frequently must anticipate the substance of the regulations which govern it. Hence this room is dedicated to certain aspects which, while seemingly disconnected, are all crucial in their own way to understanding the mechanism as a whole.
Cogs, in other words, details perhaps, yet no less vital to the story and inseparable from its history.