diff --git a/doc/erko_howto_tools.txt b/doc/erko_howto_tools.txt
index 2861202f5cee9188c9ebcf48a2ea2dfea55cba94..331c88ad51e35af98694cc004c3bb75a84cc4a16 100755
--- a/doc/erko_howto_tools.txt
+++ b/doc/erko_howto_tools.txt
@@ -831,6 +831,10 @@ uses Markdown
 Startup with:
 > jupyter-lab  # lab is new,
 
+Works from home in VPN:
+* LTS --> http://test-lcu2.astron.nl:8888/notebooks/   # = dop81
+* DTS --> http://dts-lcu.astron.nl:8888/notebooks/
+
 
 *******************************************************************************
 * Zenodo DOI