One thing I like is that the author starts the manual with this:
Although this user guide has become quite a long document, I believe that most of the functionality is self-explanatory.
If you are like me and started using the software without looking at this user guide, that’s perfectly fine, but some features, like e.g. the drag and drop features, the scenery.cfg editor or the timers in the radio stack, are somewhat hidden away, so that is where this user guide could be useful...
And, it turns out, he's right, in that I needed the manual initially to install the thing, and get the network connection working, but the actual operation has been just trial and error -- it took me a day or two to come to terms with the way the display worked, and sometimes I'd forget where to find things, but now it's a lot easier. As I said, this does a lot of different stuff, so fitting it all in a tablet display isn't easy, hence the complexity.
The thing I'm trying to deal with at the moment is how to work out a simple way to control it on a touch-screen. I'm a big fan of keyboard shortcuts, and this offers plenty, but of course the tablet doesn't have a keyboard. But that's a common problem with a lot of tools, eventually they will be better optimised for touch, but at the moment this hasn't happened.
With the release of Windows 10, we will hopefully see more 'universal apps', which will know when it's on a desktop and when it's on a tablet. I guess that Maarten Boelens, the author, won't be in too much of a hurry to make this universal, as he gives it away for free, but it might happen -- he certainly doesn't seem afraid of hard work.
And if you want to cross-check several references, you can easily put a finger at each place - try doing that with a CD 
