Add more documentation for TTY child frames

* doc/lispref/frames.texi (Child Frames): Document that TTY
child frames are now supported.
* etc/NEWS: Document another limitation of TTY child frames.

2 files changed, 7 insertions, 4 deletions

diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi
index bf4d5c05f3a..cc7d3f79a7f 100644
--- a/doc/lispref/frames.texi
+++ b/doc/lispref/frames.texi
@@ -3393,8 +3393,8 @@ of its sibling child frames.
 
   By design, operations to make or modify child frames are implemented
 with the help of frame parameters (@pxref{Frame Parameters}) without any
-specialized functions or customizable variables.  Note that child frames
-are meaningful on graphical terminals only.
+specialized functions or customizable variables.  Child frames
+are meaningful on graphical and text terminals.
 
   To create a new child frame or to convert a normal frame into a child
 frame, set that frame's @code{parent-frame} parameter (@pxref{Frame
diff --git a/etc/NEWS b/etc/NEWS
index 7e5a73818ff..9a7b320acdb 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -47,8 +47,11 @@ enabled, you can disable mouse tracking by putting '(xterm-mouse-mode
 ** Child frames are now supported on TTY frames.
 This supports use-cases like Posframe, Corfu, and child frames acting
 like tooltips.  Other use-cases of child frames are not supported yet.
-In particular, trying to create minibuffer-only child frames on a TTY
-frame will signal an error.
+In particular:
+
+- trying to create minibuffer-only child frames on a TTY frame will
+  signal an error.
+- a TTY child frame cannot be converted to a root frame or vice-versa.
 
 To enable tooltips on TTY frames, call 'tty-tip-mode'.