类似于Etienne的解决方案，一个简单的表格格式很好:

| | |
|-|-|
|`NOTE` | This is something I want you to notice. It has a lot of text, and I want that text to wrap within a cell to the right of the `NOTE`, instead of under it.|

另一种选择(更强调)是将内容作为无主体表的头:

|`NOTE` | This is something I want you to notice. It has a lot of text, and I want that text to wrap within a cell to the right of the `NOTE`, instead of under it.|
|-|-|

最后，你可以添加一条水平线(主题断线)来创建一个封闭的方框(尽管线条样式与表中的标题行略有不同):

| | |
|-|-|
|`NOTE` | This is something I want you to notice. It has a lot of text, and I want that text to wrap within a cell to the right of the `NOTE`, instead of under it.|

---

注意文本后面的空行。

你试过使用双标签吗?做一个盒子:

Start on a fresh line
Hit tab twice, type up the content
Your content should appear in a box

它在带有html输出的常规Rmarkdown文档中为我工作。双选项卡部分应该出现在一个圆角矩形浅灰色框中。

一行

> hello
> world

你好 世界

多线

方法

> hello
> 
> world (new line)

你好 世界(新线)

方法b

> ```shell
> echo hello
> echo world
> ```

回声你好 呼应世界

这是一个简单的基于乳胶的例子。

---
header-includes:
    - \usepackage[most]{tcolorbox}
    - \definecolor{light-yellow}{rgb}{1, 0.95, 0.7}
    - \newtcolorbox{myquote}{colback=light-yellow,grow to right by=-10mm,grow to left by=-10mm, boxrule=0pt,boxsep=0pt,breakable}
    - \newcommand{\todo}[1]{\begin{myquote} \textbf{TODO:} \emph{#1} \end{myquote}}
---

blah blah

\todo{something}

blah

结果是:

不幸的是，因为这是latex，所以你不能再在TODO框中包含markdown(通常这不是一个大问题)，并且当转换为PDF以外的格式(例如html)时，它将不起作用。

你也可以使用https://www.npmjs.com/package/markdown-it-container

::: warning
*here be dragons*
:::

然后渲染为:

<div class="warning">
<em>here be dragons</em>
</div>

使用GitHub，我通常会插入一个blockquote。

> **_NOTE:_**  The note content.

变得……

注:说明内容。

当然，总有简单的HTML…