From c4f8de44c2244b9d79e8c7a0d354867f70377469 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sun, 23 Jul 2023 17:08:40 +0200
Subject: Wayland: add info about CSD and SSD modes and LIBDECOR_FORCE_CSD

---
 README.Wayland.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README.Wayland.txt b/README.Wayland.txt
index 5b714c707..488223b43 100644
--- a/README.Wayland.txt
+++ b/README.Wayland.txt
@@ -79,6 +79,11 @@ The FLTK Wayland platform uses a library called libdecor which handles window de
 this form of libdecor. CMake OPTION_USE_SYSTEM_LIBDECOR can be turned on to have FLTK
 use the system's version of libdecor which is available on recent Linux distributions (e.g.,
 Debian Bookworm or more recent in packages libdecor-0-0 and libdecor-0-plugin-1-cairo).
+FLTK equipped with libdecor supports both the client-side decoration mode (CSD) and the
+server-side decoration mode (SSD) as determined by the active Wayland compositor.
+Mutter (gnome's Wayland compositor) and Weston use CSD mode, KWin and Sway use SSD mode.
+Furthermore, setting environment variable LIBDECOR_FORCE_CSD to 1 will make FLTK use CSD
+mode even if the compositor would have selected SSD mode.
 
  2.2 Known Limitations
 ----------------------
-- 
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