diff --git a/sim/imperas.ic b/sim/imperas.ic
index 3ad843cf4..aee25eabf 100644
--- a/sim/imperas.ic
+++ b/sim/imperas.ic
@@ -1,3 +1,8 @@
+# imperas.ic
+# Initialization file for ImperasDV lock step simulation
+# David_Harris@hmc.edu 15 August 2024
+# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
+
 #--mpdconsole
 #--gdbconsole
 #--showoverrides