I agree that the navigation to get to the first one is buried and should be better exposed.  I believe what's in the CSOM section of the documentation is autogenerated from the structure of our code base, though at the same time it appears we can customize this to an extent as is seen with the Drag and Drop CSOM.  I'll discuss this with our Product Guidance team to determine what can be done to improve this in future versions of the documentation.

For the second link, I did use the left hand navigation to get to it, and I admit that we get in to another situation with a bit of burying but this does get you to the same information.  If you go to the second link there's another link there (I apologize as I could have actually provided a direct link to the contents rather than requiring a click through).  This ends up pointing you to all of the JavaScript classes in the Infragistics.Web.WebTextEditor namespace.  A better approach probably would have been to send the user directly to the WebDatePicker client members link.  I'm going to relay this information to the Product Guidance team as well.

How is anyone supposed to know that its buried under WebTextEditor?  How about if nothing else, you guys provide a link from the higher level to the lower level?  Also, did you click on that second link, because I am guessing you used the left frame to navigate somewhere which didn't change the URL in the browser.  Because that second link is totally useless.  I don't even know why it's even published.