Couple of n00b questions

I’m having a go at modifying Estuary a little just for a learning experience and have a couple of basic starting questions:

I’m using this Estuary and v17.1 nightly and referencing this guide. I’ll update it with any findings I make:
First_skin_tutorial (wiki)

So to the questions:

– I’ve added the skinning keymap file. What does F6 and F7 actually do? Do I need to turn on debugging? I don’t see any change when pressing these keys.
– Is there any reason there are hardly any comments in Estuary? It would be useful to know what things do especially with all the includes.
– How do I know what view relates to which XML file? I can probably guess but it would be nice if logging showed the skin file for each view.