Visual clarity and fidelity

Each section should be divided into paragraphs.
If there are more micro-topics in the same page, it is necessary to write them in bold or to divide them in different paragraphs adding a specific title (using the format Heading 3) in the section Form. E.g. If we talk about Past Simple of To Be, we divide the form into Affirmative, Negative, Interrogative (See https://open.books4languages.com/english-a1-grammar/chapter/past-simple-of-to-be/).
Tables should have a maximum of four columns, and they should be homogenous so that they have to introduce elements in the same way with the same titles and format.
The first time that we mention a topic in a section, it should be written in bold.