Update README.adoc

README.adoc

@@ -35,7 +35,8 @@ image::xP.webp[align="center"]
 
 xA, xT, xW, xM
 --------------
-Other frontends for 'xC'.  Using them is not recommended.
+Fyne, Qt Widgets, Win32, Cocoa frontends for 'xC'.
+Using them is not recommended.
 
 xD
 --
@@ -150,7 +151,13 @@ xA
 ~~
 The Fyne frontend supports all of Linux, FreeBSD, Windows, macOS, Android, and
 iOS natively, albeit somewhat poorly.  Only use `fyne` or `fyne-cross` after
-running `make` first.
+running `make generate` first.
+
+xT
+~~
+The Qt Widgets frontend is a separate CMake subproject.  It generally supports
+all desktop operating systems.  To avoid having to specify the relay address
+each time you run it, pass it on the command line.
 
 xW
 ~~