diff --git a/core/Makefile b/core/Makefile
index f31a15d..752f602 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1,7 +1,7 @@
 #
 #		dd2 monitoring
 #
-#	buil the core functions, use with care
+#	build the core functions, use with care
 #
 
 
diff --git a/core/config.h b/core/config.h
index 1e3d063..ec7d75d 100644
--- a/core/config.h
+++ b/core/config.h
@@ -9,12 +9,14 @@ typedef struct {
 	int	valid;
 	
 	char	*input_device;
+	int	input_speed;
 
 
 	} Configuration;
 
 /* ---------------------------------------------------------------- */
 
+int set_default_config(Configuration *cfg);
 int parse_config(char *fname, int flags);
 int show_config(char *title);
 
diff --git a/core/dd2-monitor.conf b/core/dd2-monitor.conf
index 8020bcb..5910bda 100644
--- a/core/dd2-monitor.conf
+++ b/core/dd2-monitor.conf
@@ -1,10 +1,12 @@
-#
+# 
 # experimental config file
 #
 
+# --------------------------------------------------
+# serial input from the control cpu
+
 input_device	s	/dev/ttyACM0
-input_speed	s	9600
-
-
-
+input_speed	i	9600
 
+# --------------------------------------------------
+# --------------------------------------------------
diff --git a/core/parseconf.c b/core/parseconf.c
index 1bf1b99..baf4f4e 100644
--- a/core/parseconf.c
+++ b/core/parseconf.c
@@ -3,6 +3,7 @@
  */
 
 #include  <stdio.h>
+#include  <stdlib.h>
 #include  <string.h>
 
 #include  "config.h"
@@ -74,6 +75,15 @@ while (fgets(line, SZ_STRINGS, fp))
 		config.input_device = strdup(strtok(NULL, " \t"));
 		continue;
 		}
+
+
+	if (CMP("input_speed")) {
+		config.input_speed = atoi(strtok(NULL, " \t"));
+#if DEBUG_LEVEL
+		fprintf(stderr, "input speed = %d\n", config.input_speed);
+#endif
+		}
+
 	}
 
 fclose(fp);
@@ -90,6 +100,7 @@ if (verbosity) {
 
 printf("valid           :  %d\n", config.valid);
 printf("input device    :  %s\n", config.input_device);
+printf("input speed     :  %d\n", config.input_speed);
 
 puts("");
 return 0;
diff --git a/doc/dd2-monitoring.tex b/doc/dd2-monitoring.tex
index 5030824..8a12b81 100644
--- a/doc/dd2-monitoring.tex
+++ b/doc/dd2-monitoring.tex
@@ -331,8 +331,8 @@ En fait, tout reste à faire. Mais ça peut être un beau projet
 aux implications et usages multiples. 
 
 Un couteau suisse de la  capture du monde réel, un point pivot
-de nos diverses interprétations du
-monde\footnote{non, la terre n'est pas plate} et des interactions
+de nos diverses interprétations de
+l'univers\footnote{non, la terre n'est pas plate} et des interactions
 étranges entre des paramètres sans relation clairement definie.
 
 % -------------------------------------------------------------------