diff --git a/src/ID3/Header.php b/src/ID3/Header.php
index 589404c..f257f3b 100644
--- a/src/ID3/Header.php
+++ b/src/ID3/Header.php
@@ -136,7 +136,7 @@ final class ID3_Header extends ID3_Object
    * 
    * @return integer
    */
-  public function getFlags($flags) { return $this->_flags; }
+  public function getFlags() { return $this->_flags; }
   
   /**
    * Sets the flags byte.
diff --git a/src/ID3/Object.php b/src/ID3/Object.php
index 3c3e894..487059f 100644
--- a/src/ID3/Object.php
+++ b/src/ID3/Object.php
@@ -123,7 +123,7 @@ abstract class ID3_Object
   {
     if (method_exists($this, "get" . ucfirst($name)))
       return call_user_func(array($this, "get" . ucfirst($name)));
-    else throw new Reader_Exception("Unknown field: " . $name);
+    else throw new ID3_Exception("Unknown field: " . $name);
   }
   
   /**
@@ -138,7 +138,7 @@ abstract class ID3_Object
     if (method_exists($this, "set" . ucfirst($name)))
       call_user_func
         (array($this, "set" . ucfirst($name)), $value);
-    else throw new Reader_Exception("Unknown field: " . $name);
+    else throw new ID3_Exception("Unknown field: " . $name);
   }
   
   /**
diff --git a/src/ISO14496.php b/src/ISO14496.php
index 60c9887..ad91e54 100644
--- a/src/ISO14496.php
+++ b/src/ISO14496.php
@@ -170,7 +170,7 @@ require_once("ISO14496/Box.php");
  *     <li>trun -- <i>{@link ISO14496_Box_TRUN Track Fragment Run}</i>
  *     <li>sdtp -- <i>{@link ISO14496_Box_SDTP Independent and Disposable
  *         Samples}</i>
- *     <li>sbgp -- <i>{@link ISO14496_Box_SBGP SampleToGroup Box}</i>
+ *     <li>sbgp -- <i>{@link ISO14496_Box_SBGP !SampleToGroup Box}</i>
  *     <li>subs -- <i>{@link ISO14496_Box_SUBS Sub-Sample Information Box}</i>
  *     </ul>
  *   </ul>
diff --git a/src/ISO14496/Box/ILST.php b/src/ISO14496/Box/ILST.php
index 22c5de9..59955c3 100644
--- a/src/ISO14496/Box/ILST.php
+++ b/src/ISO14496/Box/ILST.php
@@ -40,7 +40,36 @@ require_once("ISO14496/Box.php");
 /**#@-*/
 
 /**
- * A container box for all the iTunes/iPod specific boxes.
+ * A container box for all the iTunes/iPod specific boxes. A list of well known
+ * boxes is provided in the following table. The value for each box is contained
+ * in a nested {@link ISO14496_Box_DATA Data Box}.
+ * 
+ * <ul>
+ * <li><b>_nam</b> -- <i>Name of the track</i></li>
+ * <li><b>_ART</b> -- <i>Name of the artist</i></li>
+ * <li><b>aART</b> -- <i>Name of the album artist</i></li>
+ * <li><b>_alb</b> -- <i>Name of the album</i></li>
+ * <li><b>_grp</b> -- <i>Grouping</i></li>
+ * <li><b>_day</b> -- <i>Year of publication</i></li>
+ * <li><b>trkn</b> -- <i>Track number (number/total)</i></li>
+ * <li><b>disk</b> -- <i>Disk number (number/total)</i></li>
+ * <li><b>tmpo</b> -- <i>BPM tempo</i></li>
+ * <li><b>_wrt</b> -- <i>Name of the composer</i></li>
+ * <li><b>_cmt</b> -- <i>Comments</i></li>
+ * <li><b>_gen</b> -- <i>Genre as string</i></li>
+ * <li><b>gnre</b> -- <i>Genre as an ID3v1 code, added by one</i></li>
+ * <li><b>cpil</b> -- <i>Part of a compilation (0/1)</i></li>
+ * <li><b>tvsh</b> -- <i>Name of the (television) show</i></li>
+ * <li><b>sonm</b> -- <i>Sort name of the track</i></li>
+ * <li><b>soar</b> -- <i>Sort name of the artist</i></li>
+ * <li><b>soaa</b> -- <i>Sort name of the album artist</i></li>
+ * <li><b>soal</b> -- <i>Sort name of the album</i></li>
+ * <li><b>soco</b> -- <i>Sort name of the composer</i></li>
+ * <li><b>sosn</b> -- <i>Sort name of the show</i></li>
+ * <li><b>_lyr</b> -- <i>Lyrics</i></li>
+ * <li><b>covr</b> -- <i>Cover (or other) artwork binary data</i></li>
+ * <li><b>_too</b> -- <i>Information about the software</i></li>
+ * </ul>
  *
  * @package    php-reader
  * @subpackage ISO 14496