JanusVR is essentially a web browser. Like most web browsers, content is defined through a "markup language" stored within an html file.
The JanusVR Markup Language (JML) is the basis for most three dimensional webspaces in JanusVR. By simply adding the JanusVR Markup Language to any document and then visiting that document in JanusVR, you can transform it into a rich 3D environment.
Below is an example of a simple JML webspace with nothing inside of it.<FireBoxRoom>
As you can see, JML is always contained within the <FireBoxRoom></FireBoxRoom> tags. Below you can learn more about the <Assets> and <Room> section of the markup.