Can't find it in Cakewalk help file, start menu, or VST folder. I give up.

Here's one thread on that.  A search will yield more.
 
I have the pdf, but don't remember now exactly where/how I got it.
 
http://forum.cakewalk.com...3.aspx?high=blue+tubes

OK so they're actually missing.

You are not missing anything. All Nomad provides in their help is an image of the plug-in and text describing the values on the image. So if you can read the face plate of the plug-in you already know the information provided in their help. For example:

Still Scook, even just that has pretty useful info for novices 

I would think it is more a distraction since it offers no more than the simplest explanation of the the plug-in face plates. Time better spent reading resources on how to use effects in general and playing with the plug-ins. Still the help is freely available from Nomad as the other thread indicates. Download a Windows installer from "Other Nomad Factory Software" section in their download area. Then extract the NomadFactory_UserManual_v4.pdf from the "3) Documentation folder" in the zip. No need to install the plug-ins. As a matter of fact, installing the Blue Tubes from Nomad will wipe out the SONAR license. So don't install any of it unless you buy a license from them.

I logged this ages ago: CWBRN-24837. Obviously got forgotten about, the human has not arrived...
 
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Everything should come with help files.