flexdashboard 中的章节标题在哪里？

Question

我有一个带有多个选项卡的 flexdashboard，我想将其中一个选项卡写成智能记事本文档。但是没有章节标题，它们去哪儿了？

为什么我希望它看起来像这个例子？ enter link description here

---
title: "Untitled"
output: 
  flexdashboard::flex_dashboard:
    orientation: columns
    vertical_layout: fill
runtime: shiny
---

```{r setup, include=FALSE}
library(flexdashboard)

```

**Contact**

aaa@abcd.edu

## What we are trying to estimate?

This is a tool whhich is designed to estimate viral dose to individual passengers on ABC under a variety of conditions.

Whilst a dose-response curve doesn't yet exist for `SARS CoV-2`, we have employed an exponential model for `HCoV229-E`, whihch is thhough to be a reasonable analogogus pathogen.

## Second sub.section

Answer 1

此代码可以工作。唯一的变化是 ### 的使用。请参阅此处了解已知错误 https://github.com/rstudio/flexdashboard/pull/250

改变

## What we are trying to estimate?

至

### What we are trying to estimate?

改变

## Second sub.section

至

### Second sub.section

flexdashboard 中的章节标题在哪里？

Where are the section headings in flexdashboard?

r

r-markdown

flexdashboard