```
% pandoc -t html5
# Section Ψ {#Ψ}

look at [Section Ψ](#Ψ).
^D
<h1 id="Ψ">Section Ψ</h1>
<p>look at <a href="#Ψ">Section Ψ</a>.</p>

```
```
% pandoc -t html4
# Section Ψ {#Ψ}

look at [Section Ψ](#Ψ).
^D
<h1 id="Ψ">Section Ψ</h1>
<p>look at <a href="#%CE%A8">Section Ψ</a>.</p>

```