diff --git a/doc/erko_howto_tools.txt b/doc/erko_howto_tools.txt
index ffc317942e0560dc244694a5236e85a9d654e2bf..0ef7c01829d3a3d951b209419db85fe8621af460 100755
--- a/doc/erko_howto_tools.txt
+++ b/doc/erko_howto_tools.txt
@@ -947,6 +947,9 @@ Quartus version meeting minutes 13 may 2020 (RW, LH JH, EK):
 * Linux
 *******************************************************************************
 
+# Window outside screen
+Doe Alt-F7 in window, daarna kun je het met de muis slepen.
+
 # Linux Mint version
 > cat /etc/issue