Index: trunk/psLib/src/sysUtils/psSysUtilsErrors.dat
===================================================================
--- trunk/psLib/src/sysUtils/psSysUtilsErrors.dat	(revision 1761)
+++ trunk/psLib/src/sysUtils/psSysUtilsErrors.dat	(revision 1787)
@@ -3,5 +3,9 @@
 #
 #  Format is:
-#  ERROR_NAME(one word)    ERROR_TEXT
+#  ERRORNAME(one word)    ERROR_TEXT
+#
+#  N.b. The ERRORNAME is exposed in the code as PS_ERR_ERRORNAME, e.g.,
+#  if ERRORNAME=psMemory_NULL_BLOCK, then use PS_ERR_psMemory_NULL_BLOCK in
+#  the code.
 #
 ####################################################################