# Callouts reference

## Folding and nesting

~~~markdown
> [!faq]- Collapsed by default
> Hidden until expanded.

> [!faq]+ Expanded by default
> Visible but collapsible.

> [!question] Outer
> > [!note] Inner
> > Nested content.
~~~

## Built-in types

| Type | Aliases |
| --- | --- |
| note | — |
| abstract | summary, tldr |
| info | — |
| todo | — |
| tip | hint, important |
| success | check, done |
| question | help, faq |
| warning | caution, attention |
| failure | fail, missing |
| danger | error |
| bug | — |
| example | — |
| quote | cite |