Basic note:
.
::: {note}
*hallo*
:::
.
<document source="<src>/index.md">
    <note>
        <paragraph>
            <emphasis>
                hallo
.

Admonition with options:
.
::: {admonition} A **title**
:class: other

*hallo*
:::
.
<document source="<src>/index.md">
    <admonition classes="other">
        <title>
            A
            <strong>
                title
        <paragraph>
            <emphasis>
                hallo
.