Here is a list of all documented files with brief descriptions:

include
oggz
oggz.h	The liboggz C API
oggz_comments.h	Reading of comments
oggz_constants.h	General constants used by liboggz
oggz_deprecated.h	Deprecated interfaces
oggz_io.h	Overriding the functions used for input and output of raw data
oggz_off_t.h	Architecture-dependent type and printf format for file position
oggz_off_t_generated.h	Architecture-dependent type for oggz_off_t
oggz_packet.h	Packet positioning
oggz_read.h	Interfaces for reading Ogg files and streams
oggz_seek.h	Seeking within files
oggz_stream.h	Interfaces for querying Ogg streams
oggz_table.h	A lookup table
oggz_write.h	Interfaces for writing Ogg files and streams