Index: /trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp	(revision 65055)
+++ /trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp	(revision 65056)
@@ -805,8 +805,8 @@
 
 /**
- * Returns @true if there are any audio samples available for processing,
- * @false if not.
- *
- * @return  bool                    @true if there are any audio samples available for processing, @false if not.
+ * Returns @c true if there are any audio samples available for processing,
+ * @c false if not.
+ *
+ * @return  bool                    @c true if there are any audio samples available for processing, @c false if not.
  * @param   pMixBuf                 Mixing buffer to return value for.
  */
Index: /trunk/src/VBox/Devices/Audio/AudioMixer.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/AudioMixer.cpp	(revision 65055)
+++ /trunk/src/VBox/Devices/Audio/AudioMixer.cpp	(revision 65056)
@@ -1787,5 +1787,5 @@
  * Returns whether a mixer stream currently is active (playing/recording) or not.
  *
- * @returns @true if playing/recording, @false if not.
+ * @returns @c true if playing/recording, @c false if not.
  * @param   pMixStream          Mixer stream to return status for.
  */
@@ -1819,5 +1819,5 @@
  * Returns whether a mixer stream is valid (e.g. initialized and in a working state) or not.
  *
- * @returns @true if valid, @false if not.
+ * @returns @c true if valid, @c false if not.
  * @param   pMixStream          Mixer stream to return status for.
  */
Index: /trunk/src/VBox/Devices/Audio/DrvAudioCommon.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/DrvAudioCommon.cpp	(revision 65055)
+++ /trunk/src/VBox/Devices/Audio/DrvAudioCommon.cpp	(revision 65056)
@@ -641,5 +641,5 @@
  *
  * @return  IPRT status code.
- * @return  bool                @true for signed bits, @false for unsigned.
+ * @return  bool                @c true for signed bits, @c false for unsigned.
  * @param   enmFmt              Audio format to retrieve value for.
  */
@@ -764,5 +764,5 @@
  * stream configuration.
  *
- * @returns @true if equal, @false if not.
+ * @returns @c true if equal, @c false if not.
  * @param   pProps              PCM properties to compare.
  * @param   pCfg                Stream configuration to compare.
@@ -811,5 +811,5 @@
  * Checks whether two given PCM properties are equal.
  *
- * @returns @true if equal, @false if not.
+ * @returns @c true if equal, @c false if not.
  * @param   pProps1             First properties to compare.
  * @param   pProps2             Second properties to compare.
@@ -854,5 +854,5 @@
  * Checks whether a given stream configuration is valid or not.
  *
- * Returns @true if configuration is valid, @false if not.
+ * Returns @c true if configuration is valid, @c false if not.
  * @param   pCfg                Stream configuration to check.
  */