master a8c83b496b3: NEWS entry for tty child frames

[Gerd Moellmann]

branch: master
commit a8c83b496b3f98ad0be835d772a36f75c47d693e
Author: Gerd Möllmann <gerd@gnu.org>
Commit: Gerd Möllmann <gerd@gnu.org>

    NEWS entry for tty child frames
---
 etc/NEWS | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/etc/NEWS b/etc/NEWS
index b9064829548..c7d11a915e6 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -43,6 +43,23 @@ enabled, you can disable mouse tracking by putting 
'(xterm-mouse-mode
 
 * Changes in Emacs 31.1
 
+---
+** Add support for child frames on tty
+
+The redisplay part is complete.  The frame-handling part supports
+use-cases like Posframe, Corfu, and child frames acting like tooltips.
+Other use-cases of child frames are not currently supported.  In
+particular, trying to create minibuffer-only child frames on ttys will
+signal an error.
+
+To enable tooltips on ttys, call 'tty-tip-mode'.
+
+The presence of child window support on ttys can be checked with
+`(featurep 'tty-child-frames)'.
+
+Current versions of Posframe and Corfu are known to use child frames on
+ttys if supported.
+
 +++
 ** Several font-lock face variables are now obsolete.
 The following variables are now obsolete: 'font-lock-builtin-face',