However, if you think about installing your game on a friend's PC or sharing it with others then please don't do it, okay?
(emphasis added)
..., well, it works for me
The FastMail team have an extraordinarily high level of clue. No wonder Opera got out their chequebook
[T]here are two APIs. The internal “importer” API, which can only be accessed by [Firefox] extensions, allows you to perform arbitrary network and OS-level operations to get information into the system. The external “content” API, which can be accessed by any web page, allows you to request access to contact data (and then starts the “permission” dialog, where the user can choose what access to grant).
This website seems to be the place to find out more.
Firefox does not support RT Fact (RT = Ray Trace, BTW) or XML3D.
The HTML5 designers, following Mozilla's lead, are specifyng WebGL, which is a JavaScript API for OpenGL ES 2.0, the current version of OpenGL for Embeeded Systems.
The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh