Update documentation

README.adoc

@@ -36,11 +36,12 @@ image::xP.webp[align="center"]
 
 xF
 --
-The hybrid terminal/X11 frontend for 'xC'.  It has simplified word wrapping,
-limited colour support, and X11 doesn't support text selection (though in 'xC'
-tradition, it will happily launch embedded gVim on both the input and the log).
+The hybrid terminal/X11 frontend for 'xC'.  It has simplified word wrapping
+and limited colour support.  Furthermore, X11 has simplified text shaping
+and doesn't support text selection (though in 'xC' tradition, it will happily
+launch an embedded editor on both the input and the log).
 
-This frontend is perfect for testing.
+In general, 'xF' mimics 'xP' and adds back a bunch of lost 'xC' UI features.
 
 xA, xT, xW, xM
 --------------

xC.adoc

@@ -47,11 +47,11 @@ This is a list of all local specialties and their respective function names:
 	Go up in history for this buffer (normally mapped to *C-p*).
 *M-n*::
 	Go down in history for this buffer (normally mapped to *C-n*).
-*C-p*, *F5*: *previous-buffer*::
+*C-p*, *F5*, *M-Up*: *previous-buffer*::
 	Switch to the previous buffer in order.
-*C-n*, *F6*: *next-buffer*::
+*C-n*, *F6*, *M-Down*: *next-buffer*::
 	Switch to the next buffer in order.
-*M-TAB*: *switch-buffer*::
+*M-/*, *M-TAB*: *switch-buffer*::
 	Switch to the last buffer, i.e., the one you were in before.
 *M-0*, *M-1*, ..., *M-9*: *goto-buffer*::
 	Go to the N-th buffer (normally sets a repeat counter).

xF.adoc

@@ -36,6 +36,23 @@ Options
 +
 The file will be appropriately commented.
 
+Key bindings
+------------
+As in *xC*(1), with a bunch of notable additions:
+
+*C-q*::
+	Quit the frontend.
+*C-F5*::
+	Forcefully reconnect to the relay.
+*C-o*::
+	Open the last link in the transcript using *xdg-open*(1).
+*M-E*::
+	Run an external editor on transcript contents, enabling, e.g., search.
+*F1*, *F2*, *M-F1*, *M-F2*::
+	Scroll the buffer list: up, down, top, bottom.
+*PageUp*, *PageUp*, *M-Home*, *M-End*, *C-Home*, *C-End*::
+	Scroll the transcript: up, down, top, bottom, top, bottom.
+
 Reporting bugs
 --------------
 Use https://git.janouch.name/p/xK to report bugs, request features,
@@ -43,4 +60,4 @@ or submit pull requests.
 
 See also
 --------
-*xC*(1)
+*xC*(1), *xdg-open*(1)