diff --git a/script/jan/hyst_Dy_singleenergy.py b/script/jan/hyst_Dy_singleenergy.py
index fb214e5..cd3d3e3 100644
--- a/script/jan/hyst_Dy_singleenergy.py
+++ b/script/jan/hyst_Dy_singleenergy.py
@@ -1,6 +1,12 @@
 off_cplus = -6.5
 off_cminus = -2.5
 rrate = 2.0        # ramping speed of mag field
+
+# normal incidence
+#e1 = 1290.2        # energy 1 (usually on edge)
+#e2 = 1283.0        # energy 2 (pre edge)
+
+# grazing incidence
 e1 = 1290.2        # energy 1 (usually on edge)
 e2 = 1283.0        # energy 2 (pre edge)