How to locate the topics in the new chm help?

I ever wrote a piece of code to somewhat parse a chm file and returns the url for that topic.
So a tool could invoke the help with this url.
The newer PB chm also seems to have topics combined and makes it more difficult, questions:

1) What should be the normal way to find a topic anyway via hhctrl.ocx or else?
Imo there is no method for this.

2) Is there in this case some index-to-file to accomplish this?

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