What is a good summary of punctuation rules or habits in Esperanto?

Question

• Marcos Cramer writes: "There are no fixed rules for punctuation in Esperanto".
• Cyril Robert Brosch writes: "Faru interpunkcie, kion vi volas."

Maybe this is the right sentiment for a language with an open and tolerant culture. But, even if there are no or few official guidelines: Is there a resource that attempts to document common punctuation habits of people writing in Esperanto? I suppose the concept of "house rules" or "style guides" goes against the Esperanto spirit? (Perhaps there are guidelines for contributors to the Esperanto-language version of Wikipedia?)

Answer 1

Is there a resource that attempts to document common punctuation habits of people writing in Esperanto?

There is such a resource, indeed: Section "Helposignoj" in PMEG.

However, consistent with the statements by Cramer and Brosch, this section averts in its introductory paragraph:

Ne ekzistas devigaj reguloj pri ilia uzado en Esperanto. Tial ili estos ĉi tie nur supraĵe klarigitaj.

Thus, even what's listed there is more what you'd call guidelines than actual rules.