Markdown natively supports callouts. See the Obsidian documentation.

Types:

  • note — pencil
  • abstract, summary, or tldr — clipboard
  • info — “i” symbol
  • todo — check mark
  • tip, hint, important — fire
  • success, check, done — open check mark
  • question, help, faq — question mark
  • warning, caution, attention — triangle attention
  • failure, fail, missing — X cross
  • danger, error — lightning bolt
  • bug
  • example — bullet list
  • quote, cite