\chapter{Undocumented Modules \label{undoc}} Here's a quick listing of modules that are currently undocumented, butthat should be documented.  Feel free to contribute documentation forthem!  (Send via email to \email{docs@python.org}.) The idea and original contents for this chapter were takenfrom a posting by Fredrik Lundh; the specific contents of this chapterhave been substantially revised.  \section{Frameworks} Frameworks tend to be harder to document, but are well worth theeffort spent. \begin{description}\item None at this time.\end{description}  \section{Miscellaneous useful utilities} Some of these are very old and/or not very robust; marked with ``hmm.'' \begin{description}\item[\module{bdb}]--- A generic Python debugger base class (used by pdb). \item[\module{ihooks}]--- Import hook support (for \refmodule{rexec}; may become obsolete).\end{description}   \section{Platform specific modules} These modules are used to implement the \refmodule{os.path} module,and are not documented beyond this mention.  There's little need todocument these. \begin{description}\item[\module{ntpath}]--- Implementation of \module{os.path} on Win32, Win64, WinCE, and    OS/2 platforms. \item[\module{posixpath}]--- Implementation of \module{os.path} on \POSIX. \item[\module{bsddb185}]--- Backwards compatibility module for systems which still use the Berkeley    DB 1.85 module.  It is normally only available on certain BSD \UNIX-based    systems.  It should never be used directly.\end{description}  \section{Multimedia} \begin{description}\item[\module{audiodev}]--- Platform-independent API for playing audio data. \item[\module{linuxaudiodev}]--- Play audio data on the Linux audio device.  Replaced in Python 2.3    by the \module{ossaudiodev} module. \item[\module{sunaudio}]--- Interpret Sun audio headers (may become obsolete or a tool/demo). \item[\module{toaiff}]--- Convert "arbitrary" sound files to AIFF files; should probably    become a tool or demo.  Requires the external program \program{sox}.\end{description}  \section{Obsolete \label{obsolete-modules}} These modules are not normally available for import; additional workmust be done to make them available. %%% lib-old is empty as of Python 2.5% Those which are written in Python will be installed into the directory % \file{lib-old/} installed as part of the standard library.  To use% these, the directory must be added to \code{sys.path}, possibly using% \envvar{PYTHONPATH}. These extension modules written in C are not built by default.Under \UNIX, these must be enabled by uncommenting the appropriatelines in \file{Modules/Setup} in the build tree and either rebuildingPython if the modules are statically linked, or building andinstalling the shared object if using dynamically-loaded extensions. % XXX need Windows instructions! \begin{description}\item[\module{timing}]--- Measure time intervals to high resolution (use \function{time.clock()}    instead).\end{description} \section{SGI-specific Extension modules} The following are SGI specific, and may be out of touch with thecurrent version of reality. \begin{description}\item[\module{cl}]--- Interface to the SGI compression library. \item[\module{sv}]--- Interface to the ``simple video'' board on SGI Indigo    (obsolete hardware).\end{description}