ccnxPortal_Listen example doesn't make sense

[mmosko]

Why is microSeconds a pointer? Is that being returned to the user? The example shows it as an input parameter (but not a pointer). Don't understand what's going on.

How do you make a Listen that lasts forever?

Why doesn't this use the CCNxStackTimeout_Never and CCNxStackTimeout_Immediate constants but instead uses NULL to wait forever?

It's also not clear what is meant by "Messaging with the local CCN router are governed by the factory properties named by CCNxPortalFactory_LocalRouterTimeout". Also, that is just defined as an "extern const char *" in ccnx_PortalFactory.h without any documentation.