diff --git a/src/io/scenarium/logger/Logger.java b/src/io/scenarium/logger/Logger.java
index 9f86683..54572fe 100644
--- a/src/io/scenarium/logger/Logger.java
+++ b/src/io/scenarium/logger/Logger.java
@@ -9,6 +9,9 @@
 package io.scenarium.logger;
 
 import java.util.HashMap;
+import java.util.List;
+
+import io.scenarium.logger.internal.Log;
 
 @SuppressWarnings("unused")
 public class Logger {
@@ -45,12 +48,83 @@ public class Logger {
 	private static final String BASH_GO_TOP = "\033[0;0f";
 
 	private static HashMap<String, LogLevel> logLevels = new HashMap<>();
-
+	private static LogLevel defaultLevel = LogLevel.CRITICAL;
 	// to enable color, you need to install in eclipse the plug-in "ANSI escape in console"
-	private static boolean haveColor = true;
+	private static boolean haveColor = false;
+	private static boolean isInit = false;
 
 	private Logger() {}
 
+	public static void usage(String applicationName) {
+		Log.print("logger - help : ");
+		Log.print("    " + applicationName + " [options]");
+		Log.print("        --logger-level=          Change the default log level (set all Log level):");
+		Log.print("            -3: debug None");
+		Log.print("            -2: debug Print");
+		Log.print("            -1: debug Todo");
+		Log.print("            0: debug Critical (default)");
+		Log.print("            1: debug Error");
+		Log.print("            2: debug Warning");
+		Log.print("            3: debug Info (default in debug)");
+		Log.print("            4: debug Debug");
+		Log.print("            5: debug Verbose");
+		Log.print("        --logger-lib=name:X  Set a library specific level:");
+		Log.print("            name  Name of the library");
+		Log.print("            X     Log level to set [0..6]");
+		Log.print("            note: ':' can be replace with '/' or '+'");
+		Log.print("        --logger-color           Enable color in log (default in Linux/debug)");
+		Log.print("        --logger-no-color        Disable color in log (default in Linux/release and Other)");
+		Log.print("        -h/--help:               Display this help");
+		Log.print("    example:");
+		Log.print("        " + applicationName + " --logger-color --logger-level=2 --logger-lib=etk:5 --logger-lib=appl:5");
+	}
+
+	public static void init(String applicationName, List<String> args) {
+		if (isInit)
+			return;
+		isInit = true;
+		for (int iii = 0; iii < args.size(); ++iii) {
+			String data = args.get(iii);
+			if (data.startsWith("--logger-level=")) {
+				String value = data.substring(15);
+				LogLevel level = LogLevel.fromString(value);
+				System.out.println("Change global level at " + value + " ==> " + level);
+				Logger.defaultLevel = level;
+			} else if (data.contentEquals("--logger-color"))
+				Logger.haveColor = true;
+			else if (data.contentEquals("--logger-no-color"))
+				Logger.haveColor = false;
+			else if (data.startsWith("--logger-lib=")) {
+				String value = data.substring(13);
+				String[] values = value.split("/");
+				if (values.length != 2) {
+					values = value.split(":");
+					if (values.length != 2) {
+						values = value.split("+");
+						if (values.length != 2) {
+							System.err.println("Can not set the --logger-lib= with value='" + value + "' not formated name:X or name/X or name+X");
+							continue;
+						}
+					}
+				}
+				System.out.println("Change level of '" + values[0] + "' at " + LogLevel.fromString(values[1]));
+				logLevels.put(values[0], LogLevel.fromString(values[1]));
+			} else if (data.contentEquals("-h") || data.contentEquals("--help"))
+				usage(applicationName);
+			else if (data.startsWith("--logger"))
+				Log.error("Can not parse the argument : '" + data + "'");
+		}
+		// Clear all logger elements.
+		int iii = 0;
+		while (iii < args.size()) {
+			String data = args.get(iii);
+			if (data.startsWith("--logger"))
+				args.remove(iii);
+			else
+				iii++;
+		}
+	}
+
 	/** This function permit to get the printable string to print in the log element (select here the number of char to print)
 	 * @param libName Name of the library
 	 * @return string to set in the logger information */
@@ -61,7 +135,7 @@ public class Logger {
 	public static boolean getNeedPrint(String libName, LogLevel level) {
 		LogLevel reference = logLevels.get(libName);
 		if (reference == null)
-			return level.isLessEqual(LogLevel.INFO);
+			return level.isLessEqual(Logger.defaultLevel);
 		return level.isLessEqual(reference);
 	}
 
@@ -79,6 +153,15 @@ public class Logger {
 		System.out.println("[C] " + libName + " | " + data);
 		if (haveColor)
 			System.out.print(BASH_COLOR_NORMAL);
+		System.out.flush();
+		if (haveColor)
+			System.out.print(BASH_COLOR_YELLOW);
+		for (StackTraceElement ste : Thread.currentThread().getStackTrace())
+			System.out.println(ste);
+		System.out.print(BASH_COLOR_NORMAL);
+		System.out.flush();
+		System.out.flush();
+		System.exit(-50);
 	}
 
 	public static void error(String libName, String data) {