This step introduces class GraphComponent, which is the central UI element for working with graphs. The application does not provide any interactive features except mouse wheel zooming, which is enabled by default. It is merely meant as a very basic example of how to display a GraphComponent within a web page.
See the sources for details.
yFiles provides workarounds which address several bugs in current browsers. Find
as a reference on how several of them are enabled for most of the demos and how to enable them for this demo, too.