I just wanted to ask the question I was not able to ask earlier, because I want to understand this clearly.
You are talking about a process leading to a binding conventional rule. This conventional rule would be created around Standing Orders and perhaps some legislation. It would become binding when a government's prime minister breaks it and pays the political price for it. Over time, the prime ministers who follow will understand that, if they do not comply with this rule, which will then be better known, they will pay the political price.
Do I understand the process correctly?