diff --git a/run/main.c b/run/main.c
index bda132f..ed79edf 100644
--- a/run/main.c
+++ b/run/main.c
@@ -5,8 +5,8 @@
 #define   MAXMSG         255       /* Max. # characters in message text      */
 #define   MAXWARNCODE    99      
 /* text copied here, no more need of include "text.h" */
-#define FMT01  "\nEPANET Version %d.%d.%d"
-#define FMT03  "\n Correct syntax is:\n %s <input file> <output file>\n"
+#define FMT01  "\nEPANET Version %d.%d.%d\n"
+#define FMT03 "\nUsage:\n %s <input_filename> <report_filename> [<binary_filename>]\n"
 #define FMT09  "\n\nEPANET completed."
 #define FMT10  "\nEPANET completed. There are warnings."
 #define FMT11  "\nEPANET completed. There are errors."
diff --git a/src/epanet.c b/src/epanet.c
index 0829902..5e5afe5 100644
--- a/src/epanet.c
+++ b/src/epanet.c
@@ -4737,7 +4737,7 @@ int DLLEXPORT EN_addnode(EN_ProjectHandle ph, char *id, EN_NodeType nodeType) {
       }
     }
   } else {
-    nIdx = net->Nnodes++;
+    nIdx = net->Nnodes+1;
     node = &net->Node[nIdx];
     coord = &net->Coord[nIdx];
     net->Ntanks++;
diff --git a/src/text.h b/src/text.h
index 0e2d9de..656b3c2 100755
--- a/src/text.h
+++ b/src/text.h
@@ -347,17 +347,12 @@ AUTHOR:     L. Rossman
 "*                         Version %d.%d                            *"
 #define LOGO6  \
 "******************************************************************"
-#define FMT01  "\n... EPANET Version %d.%d\n"
 #define FMT02  "\n  o Retrieving network data"
-#define FMT03  "\n Correct syntax is:\n %s <input file> <output file>\n"
 #define FMT04  "\n    Cannot use duplicate file names."
 #define FMT05  "\n    Cannot open input file "
 #define FMT06  "\n    Cannot open report file "
 #define FMT07  "\n    Cannot open output file "
 #define FMT08  "\n    Cannot open temporary output file"
-#define FMT09  "\n\n... EPANET completed.\n"
-#define FMT10  "\n\n... EPANET completed. There are warnings.\n"
-#define FMT11  "\n\n... EPANET completed. There are errors.\n"
 #define FMT14  "\n  o Computing hydraulics at hour "
 #define FMT15  "\n  o Computing water quality at hour "
 #define FMT16  "\n  o Transferring results to file"