How to Display Arrows

Trying out the Next API for my project where you need to display interactive graphs.  However, got some issues . 

[if !supportLists]1.       [endif]How do I display arrows, i.e to create a digraph 

[if !supportLists]2.       [endif]The labels for links appear to be overlapping. How do I fix this. 

[if !supportLists]3.       [endif]Are there any more tutorials that go deeper into styling and handling of node events. 

Maybe you can change the behavior,  when mouse over a link then display it's label.

There is also a complex way to increase the distance between links. Extend nx.graphic.Topology.Link, set property 'offsetRadix' higher

You can reference this three demo

1. how to extend current node

http://xq.cisco.com/next/NeXtSite/demos.html#Extend/node

2. How to create you own node

http://xq.cisco.com/next/NeXtSite/demos.html#Extend/abstract

3. How to define scene

http://xq.cisco.com/next/NeXtSite/demos.html#Scene/extend