Given an integer index representing a state of node, this returns the associated title of that state, or the empty string (rather than NULL) if it does not have a title.

This may be different from state's "name" (see GetNodeStateName_bn).

There is no restriction on the length of the title, or on what characters it might contain. node may have some states titled, and others not.

If you need the string to persist, make a copy of the string returned, since its contents may become invalid after further calls to Netica API. Do not try to directly modify or free the string returned.