diff --git a/php/src/output/std/AbstractMessenger.php b/php/src/output/std/AbstractMessenger.php
index 6a75f37..69da625 100644
--- a/php/src/output/std/AbstractMessenger.php
+++ b/php/src/output/std/AbstractMessenger.php
@@ -9,6 +9,10 @@ use nulib\ExceptionShadow;
 use Throwable;
 
 abstract class AbstractMessenger implements _IMessenger {
+  const ADD_DATE = false;
+
+  const SHOW_IDS = false;
+
   protected static function verifix_level($level, int $max_level=self::MAX_LEVEL): int {
     if (!in_array($level, self::VALID_LEVELS, true)) {
       $level = cl::get(self::LEVEL_MAP, $level, $level);
@@ -37,17 +41,28 @@ abstract class AbstractMessenger implements _IMessenger {
   /** @var string format de la date */
   protected string $dateFormat;
 
+  /** @var bool faut-il afficher les ids (p=id t=id a=id) */
+  protected bool $showIds;
+
   /** @var ?string identifiant de ce messenger, à ajouter à chaque ligne */
   protected ?string $id;
 
+  protected int $lastTitleId = 1;
+
+  protected int $lastActionId = 1;
+
   protected function getLinePrefix(): ?string {
     $linePrefix = null;
     if ($this->addDate) {
       $date = date_create()->format($this->dateFormat);
       $linePrefix .= "$date ";
     }
-    if ($this->id !== null) {
-      $linePrefix .= "$this->id ";
+    if ($this->showIds) {
+      if ($this->id !== null) $linePrefix .= "p=$this->id ";
+      $titleId = $this->_getTitleId();
+      if ($titleId !== null) $linePrefix .= "t=$titleId ";
+      $actionId = $this->_getActionId();
+      if ($actionId !== null) $linePrefix .= "a=$actionId ";
     }
     return $linePrefix;
   }
diff --git a/php/src/output/std/ConsoleMessenger.php b/php/src/output/std/ConsoleMessenger.php
index 7652615..381f625 100644
--- a/php/src/output/std/ConsoleMessenger.php
+++ b/php/src/output/std/ConsoleMessenger.php
@@ -11,24 +11,23 @@ use Throwable;
 
 class ConsoleMessenger extends AbstractMessenger {
   function __construct(?array $params=null) {
-    $output = cl::get($params, "output");
-    $color = cl::get($params, "color");
-    $indent = cl::get($params, "indent", static::INDENT);
+    $output = $params["output"] ?? null;
+    $color = $params["color"] ?? null;
+    $indent = $params["indent"] ?? static::INDENT;
 
-    $defaultLevel = cl::get($params, "default_level");
-    if ($defaultLevel === null) $defaultLevel = self::NORMAL;
-    $defaultLevel = self::verifix_level($defaultLevel);
+    $defaultLevel = $params["default_level"] ?? null;
+    $defaultLevel = self::verifix_level($defaultLevel ?? self::NORMAL);
 
-    $debug = boolval(cl::get($params, "debug"));
-    $minLevel = cl::get($params, "min_level");
-    if ($minLevel === null && $debug) $minLevel = self::DEBUG;
-    if ($minLevel === null) $minLevel = cl::get($params, "verbosity"); # alias
-    if ($minLevel === null) $minLevel = self::NORMAL;
-    $minLevel = self::verifix_level($minLevel, self::NONE);
+    $debug = boolval($params["debug"] ?? null);
+    $minLevel = $params["min_level"] ?? null;
+    if ($debug) $minLevel ??= self::DEBUG;
+    $minLevel ??= $params["verbosity"] ?? null; # alias
+    $minLevel = self::verifix_level($minLevel ?? self::NORMAL, self::NONE);
 
-    $addDate = boolval(cl::get($params, "add_date"));
+    $addDate = boolval($params["add_date"] ?? static::ADD_DATE);
     $dateFormat = cl::get($params, "date_format", static::DATE_FORMAT);
-    $id = cl::get($params, "id");
+    $id = $params["id"] ?? null;
+    $showIds = $params["show_ids"] ?? static::SHOW_IDS;
 
     $params = [
       "color" => $color,
@@ -45,7 +44,9 @@ class ConsoleMessenger extends AbstractMessenger {
     $this->addDate = $addDate;
     $this->dateFormat = $dateFormat;
     $this->id = $id;
+    $this->showIds = $showIds;
     $this->inSection = false;
+    $this->section = null;
     $this->titles = [];
     $this->actions = [];
   }
@@ -102,13 +103,13 @@ class ConsoleMessenger extends AbstractMessenger {
   }
 
   /** @var StdOutput la sortie d'erreur */
-  protected $err;
+  protected StdOutput $err;
 
   /** @var bool est-on dans une section? */
-  protected $inSection;
+  protected bool $inSection;
 
   /** @var array section qui est en attente d'affichage */
-  protected $section;
+  protected ?array $section;
 
   function section($content, ?callable $func=null, ?int $level=null): void {
     $this->_endSection();
@@ -141,22 +142,12 @@ class ConsoleMessenger extends AbstractMessenger {
   }
 
   function _endSection(): void {
+    while ($this->actions) $this->adone();
+    while ($this->titles) $this->_endTitle();
     $this->inSection = false;
     $this->section = null;
   }
 
-  /** @var array */
-  protected $titles;
-
-  /** @var array */
-  protected $title;
-
-  /** @var array */
-  protected $actions;
-
-  /** @var array */
-  protected $action;
-
   protected function getIndentLevel(bool $withActions=true): int {
     $indentLevel = count($this->titles) - 1;
     if ($indentLevel < 0) $indentLevel = 0;
@@ -169,43 +160,61 @@ class ConsoleMessenger extends AbstractMessenger {
     return $indentLevel;
   }
 
+  protected array $titles;
+
   function _getTitleMark(): int {
     return count($this->titles);
   }
 
+  function _getTitleId(): ?int {
+    return end($this->titles)["id"] ?? null;
+  }
+
   function title($content, ?callable $func=null, ?int $level=null): void {
     if (!$this->checkLevel($level)) return;
-    $until = $this->_getTitleMark();
-    $this->titles[] = [
+    $titleLevel = $this->_getTitleMark();
+    // faire en deux temps pour linePrefix soit à jour
+    $this->titles[] = ["id" => $this->lastTitleId++];
+    A::merge($this->titles[array_key_last($this->titles)], [
+      "title_level" => $titleLevel,
       "line_prefix" => $this->getLinePrefix(),
       "level" => $level,
       "content" => $content,
       "print_content" => true,
       "descs" => [],
       "print_descs" => false,
-    ];
-    $this->title =& $this->titles[$until];
+    ]);
     if ($func !== null) {
       try {
         $func($this);
       } finally {
-        $this->_endTitle($until);
+        $this->_endTitle($titleLevel);
       }
     }
   }
 
   function desc($content, ?int $level=null): void {
     if (!$this->checkLevel($level)) return;
-    $title =& $this->title;
-    $title["descs"][] = [
+    $desc = [
       "line_prefix" => $this->getLinePrefix(),
       "level" => $level,
       "content" => $content,
     ];
-    $title["print_descs"] = true;
+    $key = array_key_last($this->titles);
+    if (array_key_exists($key, $this->titles)) {
+      $title =& $this->titles[$key];
+      $title["descs"][] = $desc;
+      $title["print_descs"] = true;
+    } else {
+      # pas de titre en cours
+      $this->_printGeneric(
+        $desc["line_prefix"], $desc["level"],
+        "desc", $desc["content"],
+        0, $this->err);
+    }
   }
 
-  protected function printTitles(): void {
+  protected function flushTitles(): void {
     $this->printSection();
     $err = $this->err;
     $indentLevel = 0;
@@ -232,23 +241,27 @@ class ConsoleMessenger extends AbstractMessenger {
   }
 
   function _endTitle(?int $until=null): void {
-    if ($until === null) $until = $this->_getTitleMark() - 1;
+    $until ??= $this->_getTitleMark() - 1;
     while (count($this->titles) > $until) {
       array_pop($this->titles);
     }
-    if ($this->titles) {
-      $this->title =& $this->titles[count($this->titles) - 1];
-    } else {
-      $this->titles = [];
-      unset($this->title);
-    }
+  }
+
+  protected array $actions;
+
+  function _getActionMark(): int {
+    return count($this->actions);
+  }
+
+  function _getActionId(): ?int {
+    return end($this->actions)["id"] ?? null;
   }
 
   protected function flushActions(bool $endAction=false, ?int $overrideLevel=null): void {
-    $this->printTitles();
+    $this->flushTitles();
     $err = $this->err;
     $indentLevel = $this->getIndentLevel(false);
-    $lastIndex = count($this->actions) - 1;
+    $lastIndex = array_key_last($this->actions);
     $index = 0;
     foreach ($this->actions as &$action) {
       $mergeResult = $index++ == $lastIndex && $endAction;
@@ -278,59 +291,62 @@ class ConsoleMessenger extends AbstractMessenger {
     if ($endAction) $this->_endAction();
   }
 
-  function _getActionMark(): int {
-    return count($this->actions);
-  }
-
   function action($content, ?callable $func=null, ?int $level=null): void {
     $this->checkLevel($level);
-    $until = $this->_getActionMark();
-    $this->actions[] = [
+    $actionLevel = $this->_getActionMark();
+    // faire en deux temps pour linePrefix soit à jour
+    $this->actions[] = ["id" => $this->lastActionId++];
+    A::merge($this->actions[array_key_last($this->actions)], [
+      "action_level" => $actionLevel,
       "line_prefix" => $this->getLinePrefix(),
       "level" => $level,
       "content" => $content,
       "print_content" => true,
       "result_success" => null,
       "result_content" => null,
-    ];
-    $this->action =& $this->actions[$until];
+    ]);
     if ($func !== null) {
       try {
         $result = $func($this);
-        if ($this->_getActionMark() > $until) {
+        if ($this->_getActionMark() > $actionLevel) {
           $this->aresult($result);
         }
       } catch (Exception $e) {
         $this->afailure($e);
         throw $e;
       } finally {
-        $this->_endAction($until);
+        $this->_endAction($actionLevel);
       }
     }
   }
   
   function step($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "step", $content, $this->getIndentLevel(), $this->err);
+    $this->_printGenericOrException(
+      $level, "step", $content, 
+      $this->getIndentLevel(), $this->err);
   }
 
   function asuccess($content=null, ?int $overrideLevel=null): void {
     if (!$this->actions) $this->action(null);
-    $this->action["result_success"] = true;
-    $this->action["result_content"] = $content;
+    $action =& $this->actions[array_key_last($this->actions)];
+    $action["result_success"] = true;
+    $action["result_content"] = $content;
     $this->flushActions(true, $overrideLevel);
   }
 
   function afailure($content=null, ?int $overrideLevel=null): void {
     if (!$this->actions) $this->action(null);
-    $this->action["result_success"] = false;
-    $this->action["result_content"] = $content;
+    $action =& $this->actions[array_key_last($this->actions)];
+    $action["result_success"] = false;
+    $action["result_content"] = $content;
     $this->flushActions(true, $overrideLevel);
   }
 
   function adone($content=null, ?int $overrideLevel=null): void {
     if (!$this->actions) $this->action(null);
-    $this->action["result_success"] = null;
-    $this->action["result_content"] = $content;
+    $action =& $this->actions[array_key_last($this->actions)];
+    $action["result_success"] = null;
+    $action["result_content"] = $content;
     $this->flushActions(true, $overrideLevel);
   }
 
@@ -347,45 +363,42 @@ class ConsoleMessenger extends AbstractMessenger {
     while (count($this->actions) > $until) {
       array_pop($this->actions);
     }
-    if ($this->actions) {
-      $this->action =& $this->actions[count($this->actions) - 1];
-    } else {
-      $this->actions = [];
-      unset($this->action);
-    }
   }
 
   function print($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "print", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "print", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function info($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "info", $content, $this->getIndentLevel(), $this->err);
+    $this->_printGenericOrException(
+      $level, "info", $content,
+      $this->getIndentLevel(), $this->err);
   }
 
   function note($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "note", $content, $this->getIndentLevel(), $this->err);
+    $this->_printGenericOrException(
+      $level, "note", $content,
+      $this->getIndentLevel(), $this->err);
   }
 
   function warning($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "warning", $content, $this->getIndentLevel(), $this->err);
+    $this->_printGenericOrException(
+      $level, "warning", $content,
+      $this->getIndentLevel(), $this->err);
   }
 
   function error($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "error", $content, $this->getIndentLevel(), $this->err);
+    $this->_printGenericOrException(
+      $level, "error", $content,
+      $this->getIndentLevel(), $this->err);
   }
 
   function end(bool $all=false): void {
-    if ($all) {
-      while ($this->actions) $this->adone();
-      while ($this->titles) $this->_endTitle();
-      $this->_endSection();
-    } elseif ($this->actions) {
-      $this->_endAction();
-    } elseif ($this->titles) {
-      $this->_endTitle();
-    } else {
-      $this->_endSection();
-    }
+    if ($all) $this->_endSection();
+    elseif ($this->actions) $this->_endAction();
+    elseif ($this->titles) $this->_endTitle();
+    else $this->_endSection();
   }
 }
diff --git a/php/src/output/std/LogMessenger.php b/php/src/output/std/LogMessenger.php
index d14cb85..830e7b4 100644
--- a/php/src/output/std/LogMessenger.php
+++ b/php/src/output/std/LogMessenger.php
@@ -6,6 +6,10 @@ use nulib\cl;
 use nulib\output\IMessenger;
 
 class LogMessenger extends AbstractMessenger {
+  const ADD_DATE = true;
+
+  const SHOW_IDS = true;
+
   function __construct(?array $params=null) {
     $output = $params["output"] ?? null;
     $color = $params["color"] ?? false;
@@ -20,9 +24,10 @@ class LogMessenger extends AbstractMessenger {
     $minLevel ??= $params["verbosity"] ?? null; # alias
     $minLevel = self::verifix_level($minLevel ?? self::NORMAL, self::NONE);
 
-    $addDate = boolval($params["add_date"] ?? true);
+    $addDate = boolval($params["add_date"] ?? static::ADD_DATE);
     $dateFormat = cl::get($params, "date_format", static::DATE_FORMAT);
     $id = $params["id"] ?? null;
+    $showIds = $params["show_ids"] ?? static::SHOW_IDS;
 
     $this->out = new StdOutput($output ?? STDERR, [
       "color" => $color,
@@ -33,6 +38,7 @@ class LogMessenger extends AbstractMessenger {
     $this->addDate = $addDate;
     $this->dateFormat = $dateFormat;
     $this->id = $id;
+    $this->showIds = $showIds;
   }
 
   function resetParams(?array $params=null): void {
@@ -91,80 +97,87 @@ class LogMessenger extends AbstractMessenger {
     $this->end(true);
   }
 
-  protected int $titleLevel = 0;
-
-  protected int $actionLevel = 0;
-
-  protected array $actions = [];
-
-  protected ?array $action;
-
-  protected function getIndentLevel(bool $withActions=true): int {
-    $indentLevel = $this->titleLevel - 1;
-    if ($indentLevel < 0) $indentLevel = 0;
-    if ($withActions) $indentLevel += $this->actionLevel;
-    return $indentLevel;
-  }
+  protected array $titles = [];
 
   function _getTitleMark(): int {
-    return $this->titleLevel;
+    return count($this->titles);
+  }
+  
+  function _getTitleId(): ?int {
+    return end($this->titles)["id"] ?? null;
   }
 
   function title($content, ?callable $func=null, ?int $level=null): void {
     if (!$this->checkLevel($level)) return;
-    $until = $this->_getTitleMark();
+    $titleLevel = $this->_getTitleMark();
+    $this->titles[] = [
+      "id" => $this->lastTitleId++,
+      "title_level" => $titleLevel,
+    ];
     $this->_printTitle(
       $this->getLinePrefix(), $level,
       "title", $content,
-      $this->titleLevel++, $this->out);
+      $titleLevel, $this->out);
     if ($func !== null) {
       try {
         $func($this);
       } finally {
-        $this->_endTitle($until);
+        $this->_endTitle($titleLevel);
       }
     }
   }
 
   function desc($content, ?int $level=null): void {
     if (!$this->checkLevel($level)) return;
+    $titleLevel = end($this->titles)["title_level"] ?? 0;
     $this->_printGeneric(
       $this->getLinePrefix(), $level,
       "desc", $content,
-      $this->titleLevel - 1, $this->out);
+      $titleLevel, $this->out);
     
   }
   
   function _endTitle(?int $until=null): void {
-    $until ??= $this->_getTitleMark();
-    $this->titleLevel = $until;
+    $until ??= $this->_getTitleMark() - 1;
+    while (count($this->titles) > $until) {
+      array_pop($this->titles);
+    }
   }
 
+  protected array $actions = [];
+
   function _getActionMark(): int {
-    return $this->actionLevel;
+    return count($this->actions);
+  }
+
+  function _getActionId(): ?int {
+    return end($this->actions)["id"] ?? null;
   }
 
   function action($content, ?callable $func=null, ?int $level=null): void {
     $this->checkLevel($level);
-    $until = $this->_getActionMark();
-    $this->actions[] = ["level" => $level];
-    $this->action =& $this->actions[array_key_last($this->actions)];
+    $actionLevel = $this->_getActionMark();
+    $this->actions[] = [
+      "id" => $this->lastActionId++,
+      "action_level" => $actionLevel,
+      "level" => $level
+    ];
     $this->_printAction(
       $this->getLinePrefix(), $level,
       true, $content,
       false, null, null,
-      $this->actionLevel++, $this->out);
+      $actionLevel, $this->out);
     if ($func !== null) {
       try {
         $result = $func($this);
-        if ($this->_getActionMark() > $until) {
+        if ($this->_getActionMark() > $actionLevel) {
           $this->aresult($result);
         }
       } catch (Exception $e) {
         $this->afailure($e);
         throw $e;
       } finally {
-        $this->_endAction($until);
+        $this->_endAction($actionLevel);
       }
     }
   }
@@ -173,44 +186,49 @@ class LogMessenger extends AbstractMessenger {
   }
 
   function step($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "step", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "step", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function asuccess($content=null, ?int $overrideLevel=null): void {
-    if ($this->actionLevel == 0) $this->action(null);
-    $level = $overrideLevel ?? $this->action["level"];
+    if ($this->_getActionMark() == 0) $this->action(null);
+    $action = end($this->actions);
+    $level = $overrideLevel ?? $action["level"];
     $this->_printAction(
       $this->getLinePrefix(), $level,
       false, null,
       true, true, $content,
-      $this->actionLevel, $this->out);
+      $action["action_level"], $this->out);
     $this->_endAction();
   }
 
   function afailure($content=null, ?int $overrideLevel=null): void {
-    if ($this->actionLevel == 0) $this->action(null);
-    $level = $overrideLevel ?? $this->action["level"];
+    if ($this->_getActionMark() == 0) $this->action(null);
+    $action = end($this->actions);
+    $level = $overrideLevel ?? $action["level"];
     $this->_printAction(
       $this->getLinePrefix(), $level,
       false, null,
       true, false, $content,
-      $this->actionLevel, $this->out);
+      $action["action_level"], $this->out);
     $this->_endAction();
   }
 
   function adone($content=null, ?int $overrideLevel=null): void {
-    if ($this->actionLevel == 0) $this->action(null);
-    $level = $overrideLevel ?? $this->action["level"];
+    if ($this->_getActionMark() == 0) $this->action(null);
+    $action = end($this->actions);
+    $level = $overrideLevel ?? $action["level"];
     $this->_printAction(
       $this->getLinePrefix(), $level,
       false, null,
       true, null, $content,
-      $this->actionLevel, $this->out);
+      $action["action_level"], $this->out);
     $this->_endAction();
   }
 
   function aresult($result=null, ?int $overrideLevel=null): void {
-    if ($this->actionLevel == 0) $this->action(null);
+    if ($this->_getActionMark() == 0) $this->action(null);
     if ($result === true) $this->asuccess(null, $overrideLevel);
     elseif ($result === false) $this->afailure(null, $overrideLevel);
     elseif ($result instanceof Exception) $this->afailure($result, $overrideLevel);
@@ -218,47 +236,56 @@ class LogMessenger extends AbstractMessenger {
   }
 
   function _endAction(?int $until=null): void {
-    $until ??= $this->_getActionMark();
-    while ($this->actionLevel > $until) {
-      $this->actionLevel--;
+    $until ??= $this->_getActionMark() - 1;
+    while (count($this->actions) > $until) {
       array_pop($this->actions);
     }
-    if ($this->actions) {
-      $this->action =& $this->actions[array_key_last($this->actions)];
-    } else {
-      $this->actions = [];
-      unset($this->action);
-    }
+  }
+
+  protected function getIndentLevel(bool $withActions=true): int {
+    $indentLevel = count($this->titles) - 1;
+    if ($indentLevel < 0) $indentLevel = 0;
+    if ($withActions) $indentLevel += count($this->actions);
+    return $indentLevel;
   }
 
   function print($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "print", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "print", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function info($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "info", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "info", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function note($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "note", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "note", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function warning($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "warning", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "warning", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function error($content, ?int $level=null): void {
-    $this->_printGenericOrException($level, "error", $content, $this->getIndentLevel(), $this->out);
+    $this->_printGenericOrException(
+      $level, "error", $content,
+      $this->getIndentLevel(), $this->out);
   }
 
   function end(bool $all=false): void {
     if ($all) {
-      while ($this->actionLevel > 0) $this->adone();
-      while ($this->titleLevel > 0) $this->_endTitle();
-      $this->_endSection();
-    } elseif ($this->actionLevel > 0) {
+      while ($this->actions) $this->adone();
+      while ($this->titles) $this->_endTitle();
+    } elseif ($this->actions) {
       $this->_endAction();
-    } elseif ($this->titleLevel > 0) {
+    } elseif ($this->titles) {
       $this->_endTitle();
     }
   }
diff --git a/php/src/output/std/_IMessenger.php b/php/src/output/std/_IMessenger.php
index 1e632bc..ed1c70f 100644
--- a/php/src/output/std/_IMessenger.php
+++ b/php/src/output/std/_IMessenger.php
@@ -78,9 +78,13 @@ interface _IMessenger extends IMessenger {
 
   function _getTitleMark(): int;
 
+  function _getTitleId(): ?int;
+
   function _endTitle(?int $until=null): void;
 
   function _getActionMark(): int;
 
+  function _getActionId(): ?int;
+
   function _endAction(?int $until=null): void;
 }
diff --git a/php/tbin/test-output.php b/php/tbin/test-output.php
index 1974482..4aac6b5 100755
--- a/php/tbin/test-output.php
+++ b/php/tbin/test-output.php
@@ -2,6 +2,7 @@
 <?php
 require(__DIR__.'/../vendor/autoload.php');
 
+use nulib\output\IMessenger;
 use nulib\output\std\ConsoleMessenger;
 use nulib\output\std\LogMessenger;
 use nulib\UserException;
@@ -13,8 +14,10 @@ for ($i = 1; $i <= $count; $i++) {
   switch ($argv[$i]) {
   case "--console": $class = ConsoleMessenger::class; break;
   case "--log": $class = LogMessenger::class; break;
+  case "--id": $i++; $params["id"] = $argv[$i]; break;
   case "-L": $i++; $params["output"] = $argv[$i]; break;
   case "-i": $i++; $params["id"] = $argv[$i]; break;
+  case "--show-ids": $params["show_ids"] = true; break;
   case "-t": $params["add_date"] = true; break;
   case "-n": $params["color"] = false; break;
   case "+n": $params["color"] = true; break;
@@ -40,15 +43,17 @@ for ($i = 1; $i <= $count; $i++) {
 }
 $msg = new $class($params);
 
+###############################################################################
+
 $msg->title("title0");
+$msg->desc("desc0");
 $msg->title("title1");
+$msg->desc("desc1");
 $msg->print("print under title1");
 $msg->end();
 $msg->print("print under title0");
 $msg->end();
 
-exit;
-
 $msg->desc("action avec step");
 $msg->action("action avec step");
 $msg->step("step");
@@ -116,44 +121,44 @@ $msg->note("note");
 $msg->warning("warning");
 $msg->error("error");
 
-$msg->section("section", function ($msg) {
-  $msg->title("title", function ($msg) {
+$msg->section("section", function (IMessenger $msg) {
+  $msg->title("title", function (IMessenger $msg) {
     $msg->desc("desc");
     $msg->print("print");
 
     $msg->desc("action avec step");
-    $msg->action("action avec step", function ($msg) {
+    $msg->action("action avec step", function (IMessenger $msg) {
       $msg->step("step");
       $msg->asuccess("action success");
     });
 
-    $msg->action("action avec step", function ($msg) {
+    $msg->action("action avec step", function (IMessenger $msg) {
       $msg->step("step");
       $msg->afailure("action failure");
     });
 
-    $msg->action("action avec step", function ($msg) {
+    $msg->action("action avec step", function (IMessenger $msg) {
       $msg->step("step");
       $msg->adone("action done");
     });
 
     $msg->desc("actions sans step");
-    $msg->action("action sans step", function ($msg) {
+    $msg->action("action sans step", function (IMessenger $msg) {
       $msg->asuccess("action success");
     });
 
-    $msg->action("action sans step", function ($msg) {
+    $msg->action("action sans step", function (IMessenger $msg) {
       $msg->afailure("action failure");
     });
 
-    $msg->action("action sans step", function ($msg) {
+    $msg->action("action sans step", function (IMessenger $msg) {
       $msg->adone("action done");
     });
 
     $msg->desc("actions imbriquées");
-    $msg->action("action0", function ($msg) {
-      $msg->action("action1", function ($msg) {
-        $msg->action("action2", function ($msg) {
+    $msg->action("action0", function (IMessenger $msg) {
+      $msg->action("action1", function (IMessenger $msg) {
+        $msg->action("action2", function (IMessenger $msg) {
           $msg->asuccess("action2 success");
         });
         $msg->asuccess("action1 success");
@@ -162,38 +167,38 @@ $msg->section("section", function ($msg) {
     });
 
     $msg->desc("action avec step, sans messages");
-    $msg->action("action avec step, sans messages, success", function ($msg) {
+    $msg->action("action avec step, sans messages, success", function (IMessenger $msg) {
       $msg->step("step");
       $msg->asuccess();
     });
 
-    $msg->action("action avec step, sans messages, failure", function ($msg) {
+    $msg->action("action avec step, sans messages, failure", function (IMessenger $msg) {
       $msg->step("step");
       $msg->afailure();
     });
 
-    $msg->action("action avec step, sans messages, done", function ($msg) {
+    $msg->action("action avec step, sans messages, done", function (IMessenger $msg) {
       $msg->step("step");
       $msg->adone();
     });
 
     $msg->desc("action sans step, sans messages");
-    $msg->action("action sans step, sans messages, success", function ($msg) {
+    $msg->action("action sans step, sans messages, success", function (IMessenger $msg) {
       $msg->asuccess();
     });
 
-    $msg->action("action sans step, sans messages, failure", function ($msg) {
+    $msg->action("action sans step, sans messages, failure", function (IMessenger $msg) {
       $msg->afailure();
     });
 
-    $msg->action("action sans step, sans messages, done", function ($msg) {
+    $msg->action("action sans step, sans messages, done", function (IMessenger $msg) {
       $msg->adone();
     });
 
     $msg->desc("actions imbriquées, sans messages");
-    $msg->action("action0", function ($msg) {
-      $msg->action("action1", function ($msg) {
-        $msg->action("action2", function ($msg) {
+    $msg->action("action0", function (IMessenger $msg) {
+      $msg->action("action1", function (IMessenger $msg) {
+        $msg->action("action2", function (IMessenger $msg) {
           $msg->asuccess();
         });
         $msg->asuccess();
@@ -202,40 +207,40 @@ $msg->section("section", function ($msg) {
     });
 
     $msg->desc("action avec step, avec code de retour");
-    $msg->action("action avec step, avec code de retour true", function ($msg) {
+    $msg->action("action avec step, avec code de retour true", function (IMessenger $msg) {
       $msg->step("step");
       return true;
     });
 
-    $msg->action("action avec step, avec code de retour false", function ($msg) {
+    $msg->action("action avec step, avec code de retour false", function (IMessenger $msg) {
       $msg->step("step");
       return false;
     });
 
-    $msg->action("action avec step, avec code de retour autre", function ($msg) {
+    $msg->action("action avec step, avec code de retour autre", function (IMessenger $msg) {
       $msg->step("step");
       return "autre";
     });
 
-    $msg->action("action avec step, avec code de retour null", function ($msg) {
+    $msg->action("action avec step, avec code de retour null", function (IMessenger $msg) {
       $msg->step("step");
     });
 
     $msg->desc("action sans step, avec code de retour");
-    $msg->action("action sans step, avec code de retour true", function ($msg) {
+    $msg->action("action sans step, avec code de retour true", function (IMessenger $msg) {
       return true;
     });
 
-    $msg->action("action sans step, avec code de retour false", function ($msg) {
+    $msg->action("action sans step, avec code de retour false", function (IMessenger $msg) {
       return false;
     });
 
-    $msg->action("action sans step, avec code de retour autre", function ($msg) {
+    $msg->action("action sans step, avec code de retour autre", function (IMessenger $msg) {
       return "autre";
     });
 
     # ici, il n'y aura pas de message du tout
-    $msg->action("action sans step, avec code de retour null", function ($msg) {
+    $msg->action("action sans step, avec code de retour null", function (IMessenger $msg) {
     });
 
     $msg->info("info");
@@ -245,7 +250,7 @@ $msg->section("section", function ($msg) {
   });
 });
 
-$msg->section("multi-line\nsection", function ($msg) {
+$msg->section("multi-line\nsection", function (IMessenger $msg) {
   $msg->title("multi-line\ntitle");
   $msg->title("another\ntitle");
 
@@ -267,16 +272,16 @@ $msg->section("multi-line\nsection", function ($msg) {
   $msg->end();
 });
 
-$msg->section("Exceptions", function ($msg) {
+$msg->section("Exceptions", function (IMessenger $msg) {
   $e = new Exception("message");
   $u1 = new UserException("userMessage");
   $u2 = (new UserException("userMessage"))->setTechMessage("techMessage");
-  $msg->title("avec message", function ($msg) use ($e, $u1, $u2) {
+  $msg->title("avec message", function (IMessenger $msg) use ($e, $u1, $u2) {
     $msg->info(["exception", $e]);
     $msg->info(["userException1", $u1]);
     $msg->info(["userException2", $u2]);
   });
-  $msg->title("sans message", function ($msg) use ($e, $u1, $u2) {
+  $msg->title("sans message", function (IMessenger $msg) use ($e, $u1, $u2) {
     $msg->info($e);
     $msg->info($u1);
     $msg->info($u2);