RE: `wdired-change-to-wdired-mode' is not on any key

[Drew Adams]

> > Yes, the uppercase `dired-do-*' bindings will also treat the 
> > current line's file, but they don't do that if there are
> > marked files. IOW, with the additional lowercase bindings,
> > you can leave files marked and still act on another file.
> 
> You can already do that.  R ... operates on the current file
> when ARG = 1.

Sure. So think of `r' as a shortcut for `C-1 R'.