Is there an industry standard for naming pages in newspapers?

Thank you for the invitation. As far as I know, at least there are no mandatory industry standards. The Legal Evening News was initially divided into stacks A1 and A2, with hard news in the front and supplements of culture, sports and entertainment at the back. Later, it was expanded and divided into stacks A1, A2, and B1. The front was almost the same, and stack B1 contained community news and supplements. Now it is A1 and A2. It is a regular stack, but also has various special issues, such as finance, treasure appraisal, automobiles, travel, real estate, etc. The Beijing News, on the other hand, uses methods like A, B, C, and D. As far as I know, this is related to the habits of the bosses. Some bosses think that calling them A1 and A2 makes them look like stacks A, which makes advertising easier to sell, while others don’t like to add numbers. In short, they have different preferences, but in fact there is not much difference. However, now the stacking of some professional news, such as cars and real estate, is relatively uniform. This also facilitates advertising arrangements. For example, Beiqing Daily launches a special publication within the newspaper, which actually has the same meaning.