diff -rNup orig/etc/etcscreenrc new/etc/etcscreenrc
--- orig/etc/etcscreenrc	2016-09-20 07:50:39.426690733 +0200
+++ new/etc/etcscreenrc	2016-09-20 08:12:00.512776016 +0200
@@ -92,3 +92,5 @@ bind I login on
 bind O login off
 bind } history
 
+#prevent to remove lines by ctrl + arrow keys
+term xterm
diff -rNup orig/etc/etcscreenrc.screenrc new/etc/etcscreenrc.screenrc
--- orig/etc/etcscreenrc.screenrc	2015-09-05 21:28:22.000000000 +0200
+++ new/etc/etcscreenrc.screenrc	2016-09-20 08:12:17.528658253 +0200
@@ -92,3 +92,5 @@ bind I login on
 bind O login off
 bind } history
 
+#prevent to remove lines by ctrl + arrow keys
+term xterm
diff -rNup orig/etc/screenrc new/etc/screenrc
--- orig/etc/screenrc	2016-09-20 07:50:39.427690726 +0200
+++ new/etc/screenrc	2016-09-20 08:12:41.593494196 +0200
@@ -120,3 +120,6 @@ hardstatus string "[screen %n%?: %t%?] %
 # defnonblock 1
 # blankerprg rain -d 100
 # idle 30 blanker
+
+#prevent to remove lines by ctrl + arrow keys
+term xterm
diff -rNup orig/etc/screenrc.screenrc new/etc/screenrc.screenrc
--- orig/etc/screenrc.screenrc	2016-06-19 21:41:03.000000000 +0200
+++ new/etc/screenrc.screenrc	2016-09-20 08:13:07.705319215 +0200
@@ -151,3 +151,7 @@ bind ^] paste [.]
 # defnonblock 1
 # blankerprg rain -d 100
 # idle 30 blanker
+
+#prevent to remove lines by ctrl + arrow keys
+term xterm
+