I was slightly concerned, after installing iTunes 12.7, that when I connected my iPad to iTunes, there was no longer an "Apps" item showing up in the device view. How do I now transfer files from my PC to apps like "GoodReader"?
A little experimentation, though, shows that this is now done using the option called "File Sharing". Click this and you get the familiar list of apps that you can send files to, and drag and drop works as previously.
Hopefully this'll save someone else having to hunt around for the feature

.