:::a
:::

:::a[b]
:::

:::a{b}
:::

:::a[b]{c}
:::

:::a[b *c* d **e**]
:::

:::a{#e .c.d.f.g h="i & j k"}
:::

:::::a
::::b
:::c
:::
::::
:::::

:::::a
b

::::c
d

:::e
*   *   f
:::

> g h
::::
:::::