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diff --git a/vorbis/doc/vorbis-errors.txt b/vorbis/doc/vorbis-errors.txt
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+++ b/vorbis/doc/vorbis-errors.txt
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+Error return codes possible from libvorbis and libvorbisfile:
+
+All 'failure' style returns are <0; this either indicates a generic
+'false' value (eg, ready?  T or F) or an error condition.  Code can
+safely just test for < 0, or look at the specific return code for more
+detail.
+
+*** Return codes:
+
+OV_FALSE        The call returned a 'false' status (eg, ov_bitrate_instant 
+		can return OV_FALSE if playback is not in progress, and thus 
+		there is no instantaneous bitrate information to report.
+
+OV_HOLE		libvorbis/libvorbisfile is alerting the application that 
+		there was an interruption in the data (one of: garbage 
+		between pages, loss of sync followed by recapture, or a 
+		corrupt page)
+
+OV_EREAD        A read from media returned an error.
+
+OV_EFAULT       Internal logic fault; indicates a bug or heap/stack 
+		corruption.
+
+OV_EIMPL        The bitstream makes use of a feature not implemented in this 
+		library version.
+
+OV_EINVAL       Invalid argument value.
+
+OV_ENOTVORBIS	Bitstream/page/packet is not Vorbis data.
+
+OV_EBADHEADER   Invalid Vorbis bitstream header.
+
+OV_EVERSION	Vorbis version mismatch.
+
+OV_ENOTAUDIO	Packet data submitted to vorbis_synthesis is not audio data.
+
+OV_EBADPACKET	Invalid packet submitted to vorbis_synthesis.
+
+OV_EBADLINK	Invalid stream section supplied to libvorbis/libvorbisfile, 
+		or the requested link is corrupt. 
+
+OV_ENOSEEK	Bitstream is not seekable.
+
+
+****************************************************************
+*** Libvorbis functions that can return failure/error codes:
+
+int vorbis_analysis_headerout()
+    OV_EIMPL
+
+int vorbis_analysis_wrote()
+    OV_EINVAL
+
+int vorbis_synthesis_headerin()
+    OV_ENOTVORBIS, OV_EVERSION, OV_EBADHEADER
+
+int vorbis_synthesis()
+    OV_ENOTAUDIO, OV_EBADPACKET
+
+int vorbis_synthesis_read()
+    OV_EINVAL
+
+****************************************************************
+*** Libvorbisfile functions that can return failure/error codes:
+
+int ov_open_callbacks()   
+    OV_EREAD, OV_ENOTVORBIS, OV_EVERSION, OV_EBADHEADER, OV_FAULT
+
+int ov_open()
+    OV_EREAD, OV_ENOTVORBIS, OV_EVERSION, OV_EBADHEADER, OV_FAULT
+
+long ov_bitrate()
+    OV_EINVAL, OV_FALSE
+
+long ov_bitrate_instant()
+    OV_FALSE
+
+ogg_int64_t ov_raw_total()
+    OV_EINVAL
+
+ogg_int64_t ov_pcm_total()
+    OV_EINVAL
+
+double ov_time_total()
+    OV_EINVAL
+
+int ov_raw_seek()
+    OV_ENOSEEK, OV_EINVAL, OV_BADLINK
+
+int ov_pcm_seek_page()
+    OV_ENOSEEK, OV_EINVAL, OV_EREAD, OV_BADLINK, OV_FAULT
+
+int ov_pcm_seek()
+    OV_ENOSEEK, OV_EINVAL, OV_EREAD, OV_BADLINK, OV_FAULT
+
+int ov_time_seek()
+    OV_ENOSEEK, OV_EINVAL, OV_EREAD, OV_BADLINK, OV_FAULT
+
+int ov_time_seek_page()
+    OV_ENOSEEK, OV_EINVAL, OV_EREAD, OV_BADLINK, OV_FAULT
+
+long ov_read()
+    OV_HOLE, OV_EBADLINK