A guided walk through Shirone’s Markdown capabilities, from the plain syntax basics to the theme-specific extensions.

• Part 1 starts with the vanilla Markdown syntax every post supports.
• Part 2 covers the extended features on top of it.
• Part 3 dives into Shirone’s own enhancements (admonitions, content annotations, and the other M3E containers).

The series is completed. Note that defaultCategory only acts as a fallback: a post may still declare its own explicit category to override it.