Scenario: you're writing the world's shortest book.

You have a few headings and a ToC to go with it.

${toc}

## Chapter 1

## Chapter 2

## Chapter 3

But say you decide you want to use variables for the chapters just because.

`import example`

${toc}

## $chapter1

## $chapter2

## $chapter3

The ToC doesn't render the headings. It would be nice if it did. I'm not sure if it's the markdown limitation (for the same reason why underline is not supported) or something that can be done.

On a small side note, is it safe to add comments to the variable pages? Like so:

|  variable  |   value   | comment |
| ---------- | --------- | --------- |
|  $chapter1  | Chapter 1  | Start of the book |

Or even this in the next few lines?