I went thoroughly through the latest Writer guide (WG40-WriterGuideLO.pdf, no WG 5.0 as of now) and did not find description of the built-in styles (paragraph, character, pages, frame and list).
What I am looking for is the intended use of these various styles so that I can minimise the number of custom styles and try to have “standard” (if such a word has an agreed meaning here) documents. Apart from Default style (with its obvious intent of “no-style” or root of every other), Heading x and partially Marginalia, there is nothing in the guide.
Is there any document describing the intended semantics of built-in styles?
Update: using the built-in styles is a requirement in international context like FOSS since built-in style names get translated while custom style name are not. Consequently, a co-writer using a different native language can better understand why a particular style is used. Here we meet the intended use-case behind the built-in style and the specific use by the original contributor. Presently, I solve that with a guideline document for writers, but I may deviate from the initial intent.