how to get the xenko documentation for offline usage in html format ?
Repository is here: https://github.com/xenko3d/xenko-docs. Instructions to build there: https://github.com/xenko3d/xenko-docs/blob/master/GETTINGSTARTED.md#Build.
There are build scripts. I haven’t tested them in a long time, so you might encounter some issues.
Feel free to follow up here