Presentation styles had been developed in the conventional printing and typography technology, being based on cultural background of each country, each territory, each publishing/newspaper company.
Therefore when we study presentation styles, we have to be serious about the cultural background as we had been in our character study.
When we study presentation styles, we face to the problem that there are few authorized or published references on presentation styles of each country, each territory, each publishing/newspaper company. The only authorized references could be Oxford rule and Chicago rule for conventional Western documents.
Besides, we should study presentation styles for web documents, where appropriate presentation styles have not yet established.