```
% pandoc -t native
\parbox{1em}{#1}
^D
[Para [Str "\\parbox{1em}{#1}"]]
```

```
% pandoc -t native
\newcommand{\highlight}[1]{\colorbox{yellow}{\parbox{\dimexpr\linewidth-2\fboxsep}{#1}}

Hello World
^D
[Para [Str "\\newcommand{",RawInline (Format "tex") "\\highlight",Str "}[1]{\\colorbox{yellow}{\\parbox{",RawInline (Format "tex") "\\dimexpr",RawInline (Format "tex") "\\linewidth-2",RawInline (Format "tex") "\\fboxsep",Str "}{#1}}"]
,Para [Str "Hello",Space,Str "World"]]
```