If you watch the video you'll see an example fo what I was looking for: The methods/properties of TCodeTool.
To jamie: This class is not in the help. It's part of a package used by the IDE, and those types of files are not in the help files, so that is not an option.
To tazz: I am writing a control, but wanted to add some features that require CodeTools to make its use a bit easier. In this case the class hierarchy of TCodeTool is VERY deep (as shown in the video), and opening a file to examine it isn't really going to help much. Your going to need probably 10 files to find all the methods, and they span off the screen in 7 of them. There is no clear place to see them all in one place.
But in general, this is a problem. For any moderately complex class or interface outside the scope of the RTL, FCL, and LCL it's currently not practical to start learning how to use such code unless you are the original author or a guide has been written.
What should be possible, with a tool like an object browser, is that anyone could browse through classes, and other code, and see all their methods, properties, and inherited members without chasing through multiple files. This would give the user a much greater head start on understanding how something works.
Try it yourself. Start a new project, add CodeTools (or IDEIntf, or chrome Cef, anything complex really) to the requirements, and try to figure out what's going on. Same thing goes with just about any package of moderate complexity that isn't part of the LCL.
For anyone that wanders outside of the LCL, we need some tool like I mentioned.