diff --git a/xrdp/xrdp.ini b/xrdp/xrdp.ini
index d7ffad98..e3ae2841 100644
--- a/xrdp/xrdp.ini
+++ b/xrdp/xrdp.ini
@@ -150,6 +150,9 @@ tcutils=true
 ; Session types
 ;
 
+; Some session types such as Xorg, X11rdp and Xvnc start a display server.
+; Startup command-line parameters for the display server are configured
+; in sesman.ini. See and configure also sesman.ini.
 [Xorg]
 name=Xorg
 lib=libxup.so