captaincaveman·4 anni fa·discussit works well for laying out information for reading, and has some additional markup beyond just layout (unlike markdown), I'd argue it is fairly rudimentary and not extensible.
captaincaveman·4 anni fa·discussyet has no metadata or any semantics, its basically just how you layout text ...
captaincaveman·4 anni fa·discussMarkdown is fine for formatting text, not convinced it's great for knowledge management.