Newbie: Help file linking?

I have not discovered how to look up help on certain items. The one I just tried was TreeView. I found it eventually, but nothing seemed to indicate that it was under ControlsEx.
Is there something I should set up to get an expandable tree under each of the libraries listed on the help menu?

It seems otherwise, that if I don't know where it resides I will have to open each library help, until I find it.
Treeview did not come up in the main help and then direct me to the correct help file either.

Many thanks

Look at this, there you have all the help files and their content.

http://www.b4x.com/specifications.html#list

TreeView
http://www.b4x.com/help/controlsex/index.html?overview7

Best regards

Thank you klaus.
It wasn't quite what I meant but it does suffice if online.
I guess I expected all offline help files to be linked to a master index.