The index doesn’t have to be a PHP file since there is no need to
generate the list of chapters anew every time the ToC is opened.
Instead, the list of chapters is generated once, ahead of time, and
saved to the index.html.
As an added bonus, this allows the ToC to be generated and used
as a local file.
Partially following comments I left while converting the whole thing to
HTML, partially I just saw something that I wanted to change.
I found somelogic issues that I’m gonna have to fix another time.
BodgeMaster