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

allocate.h	Convenient macros and functions for allocating objects, arrays or 2D arrays
collection.h	Functions for collection data structures such as set and array
file_functions.h	File functions
sqlite_functions.h	SQLite suppporting data structures and functions
str_functions.h	String processing functions
Unihan.h	API for libUnihan
Unihan_enum.h	Enumeration and defintion used in libUnihan
Unihan_phonetic.h	Phonetic symbols (PinYin and ZhuYin) processing functions
verboseMsg.h	Verbose message handling