Zipped Manual

First, download the manual to your PC or Android device.
Extract the zip file using a zip program or file-manager.
There should be a directory called hmanual. The first page is index.html.

To read this manual on a PC with a web browser, open this page;
file://<your_path>hmanual/index.html inside the browser.

Reading on an Android Device

Unfortunately, on Android 11+ devices, you cannot download outside of your scoped storage, and other browsers are not allowed to browse inside.

Instead you can use the program get-hmanual.bas in the repository.
It can download the zip file (into data/) , extract it and view it.
Choose Download, then Extract and finally View.

The program is needed because since Android 11+, outside apps are not able to view files inside another apps' scoped storage, and they also cannot follow links properly to another document.