The ability to go to the wiki article from the tags menu

[deevroman]

For example, by [long] pressing the key in the tag list.

It may be useful to add an explanatory inscription at the bottom, as a list of changes in the settings.

[habi]

Go Map!! does that via a little (i) button to the right of the key=value entry box.
I think it's really helpful.

[Zverik]

I am not sure about this. Technically it's easy to make, but the raw tags list is pretty narrow, and these buttons will make fields for values even shorter.

Maybe I could make key names clickable, but how to signal they are? Underline everything? Then again, too much visual clutter...