一个选项是tippy包。

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
library(tippy)

This is a

tippy("word.", tooltip = "Definition of word that pops up in a box upon hovering")

I would like to know its definition.

字符串

![](https://i.stack.imgur.com/b56aY.png)
的数据

在这里找到a solution

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)

Introduction to tooltip or popups

This is a word. I would like to know its definition.

字符串
如果能够更改工具提示就好了。
[This webpage](https://www.samanthaming.com/tidbits/98-html-abbr/)可以帮助您自定义标记（Abbreviate Your Code with HTML abbr Tag）。
我也在寻找一种方法来拥有一个[Wikipedia hover box style](https://en.wikipedia.org/wiki/Template:Abbr/doc)。
同样，当你悬停文本时，你可以避开“默认”框，并根据自己的喜好修改它：这个网站提供了修改“工具提示”框的例子。