diff --git a/liblog.c b/liblog.c
index b8f9073..d68c616 100644
--- a/liblog.c
+++ b/liblog.c
@@ -9,18 +9,15 @@
 #include <gint/timer.h>
 
 #ifdef FX9860G
-
 static int number_max_messages=4096; // Ram 4Ko
 #define MAX_LENGHT 22
 #define WIDTH 8
-
 #endif
-#ifdef FXCG50
 
+#ifdef FXCG50
 static int number_max_messages=10000; // Ram 10 Ko
 #define MAX_LENGHT 132
 #define WIDTH 17
-
 #endif
 
 typedef struct log_line log_line;
@@ -36,19 +33,16 @@ typedef struct log_line
 static log_line first_line=
 {
     0,
-    "<top>",
+    "Log beginning:",
     0,
     0
 };
+
 static log_line* current_line=&first_line;
 
-/// Change the following line to custom ram weight
- // 1Ko max
-
-
 static int number_messages=0;
 
-static int state=1;
+static log_level_t priority=LOG_INFO;
 
 static log_line* cut_line()
 {
@@ -83,14 +77,20 @@ void ll_set_size(int s)
 int ll_get_size();
 
 
-void ll_set_state(int s)
+void ll_set_state(log_state_t s)
 {
-    state = s;
+    if (s==LOG_DISABLE)
+    	priority=LOG_QUIET;
+    if (s==LOG_ENABLE)
+    	priority=LOG_INFO;
 }
 
 int ll_get_state()
 {
-    return state;
+    if (priority=LOG_QUIET)
+    	return 0;
+    else
+    	return 1;
 }
 
 
@@ -184,7 +184,7 @@ static void append_character(char c)
 // log something
 void ll_send(const char * txt)
 {
-    if (state)
+    if (priority!=LOG_QUIET)
     {
         char c=1;
         int i=0;
@@ -197,6 +197,12 @@ void ll_send(const char * txt)
     }
 }
 
+void ll_sendp(char const *s , log_level_t l)
+{
+	if (l>=priority)
+		ll_send(s);
+}
+
 static void show_line(const log_line* l, int y)
 {
     dtext(1, y, &l->text[0], C_BLACK, C_NONE);
diff --git a/liblog.h b/liblog.h
index da2583f..572f85f 100644
--- a/liblog.h
+++ b/liblog.h
@@ -1,31 +1,91 @@
 #ifndef LLOG
 #define LLOG
 
-// Enables or disable the log state
-// It increases performances and then you can choose to enable && disable logging during execution
-// s==1 => enabled
-// s==0 => disabled
-void ll_set_state(int s);
+/** Liblog Commands Table 
+		State [deprecated, see "Log level"]
+		Verbosity
+		Editing
+		Advanced behaviour
+		*/
 
-// With this function you can copy the state somewhere, and restore it after modifications
-int ll_get_state();
 
-// Display a message in the log stream
-// you can add \n to start an new line ^^
-void ll_send(const char * txt);
 
-// Put the 8 last lines of the stream
-void ll_display();
 
-// Enable log displaying on panic
-void ll_set_panic();
+/*** [deprecated] Log state
+		-> using "Log level" is recommended
+	Enables or disable the log state
+	It increases performances and then you can choose to enable|disable logging during execution */
+typedef enum {LOG_ENABLE=0,LOG_DISABLE=1} log_state_t;
 
-// Display log, enable scrolling, and waits the user to press Exit
-void ll_pause();
+/* ll_set_state(log_state_t):
+	sets log state */
+void ll_set_state(log_state_t);
 
-// Clear log
-void ll_clear();
+/* ll_get_state():
+	return log state */
+log_state_t ll_get_state(void);
 
-void ll_set_lenght();
+
+
+
+/*** Log level:
+	Customs verbosities for the log stream ->messages have custom levels
+	Default value is LEVEL_INFO */
+typedef enum {LEVEL_BLABLA, LEVEL_INFO, LEVEL_WARNING, LEVEL_CRITICAL, LEVEL_FATAL, LEVEL_MAX, LEVEL_QUIET} log_level_t;
+
+/* ll_set_level(log_level_t):
+	sets log verbosity */
+void ll_set_level(log_level_t);
+
+/* ll_get_level():
+	return log level */
+log_level_t ll_set_level(void);
+
+
+
+
+/*** Log editing
+	Use the following functions to send messages
+	These commands does support '\n' */
+
+/* ll_send(char const *)[deprecated]:
+	Print text
+	This function sends the message with a maximal priority
+	It will be ignored only if the log is disabled or set to quiet (same thing) */
+void ll_send(char const *);
+
+/* ll_sendp(char const *, log_level_t):
+	Print text
+	This function sends the message with a custom priority
+	Note: A message sent with `LEVEL_QUIET` counts as a `LEVEL_MAX` log */
+void ll_sendp(char const *, log_level_t);
+
+/* ll_clear():
+	Reset log */
+void ll_clear(void);
+
+
+
+
+/*** Log displaying
+	Here are different functions to display a log
+	There are both in fullscreen */
+
+/* ll_display():
+	One frame displaying
+	It shows the last lines of the log, without scrolling ability */
+void ll_display(void);
+
+/* ll_pause():
+	Display log, enable scrolling with arrows, and waits the user to press Exit */
+void ll_pause(void);
+
+
+
+
+/*** Advanced behaviour
+	This funciont sets the behaviour when an exception occurs
+	*/
+void ll_set_panic(void);
 
 #endif