diff --git a/doc/erko_howto_tools.txt b/doc/erko_howto_tools.txt
index 35ec392cafece778249b822ae9005ee8ec5d712a..90b0340c27c6640fec8e1f1a66f13727b9088108 100755
--- a/doc/erko_howto_tools.txt
+++ b/doc/erko_howto_tools.txt
@@ -838,6 +838,11 @@ Works from home in VPN:
 * LTS --> http://test-lcu2.astron.nl:8888/notebooks/   # = dop81
 * DTS --> http://dts-lcu.astron.nl:8888/notebooks/
 
+XST indices:
+* DTS --> http://dts-lcu.astron.nl:8888/tree/python_test_scripts/XST_test/XSTs
+* DTS --> http://dts-lcu.astron.nl:8888/notebooks/python_test_scripts/XST_test/XST_index_test.ipynb
+
+
 Get XST results h5 file per crosslet on local machine from LCU2
 > ls22-statistics-writer -a dts-lcu.astron.nl