don't let the AudioEngine inherit PortEngine's class doc.

diff --git a/libs/ardour/ardour/audio_backend.h b/libs/ardour/ardour/audio_backend.h
index d5c53b46824f43ea574d9d0ab765a71bb91de7e7..9a00cf281ee11b259c619069b484bf28e420d2d8 100644 (file)
--- a/libs/ardour/ardour/audio_backend.h
+++ b/libs/ardour/ardour/audio_backend.h
@@ -80,6 +80,9 @@ struct LIBARDOUR_API AudioBackendInfo {
     bool (*available)();
 };
 
+/** AudioBackend is an high-level abstraction for interacting with the operating system's
+ * audio and midi I/O.
+ */
 class LIBARDOUR_API AudioBackend : public PortEngine {
   public: