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<concept id="GUID-5072BE46-B1B4-5C3A-BF55-BEA7443E7657" xml:lang="en"><title>Generic OS
Services Guide</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>Generic OS Services is a collection of components and libraries that provide
generic OS level services to Symbian platform components and applications.
The generic OS level services include a plug-in framework (ECom) for defining
and using plug-ins, a P.I.P.S. environment for porting POSIX-based applications,
and a Zip Compression Library for stream and file compression, and decompression. </p>
<p>Generic OS Services also includes generic services for task scheduling,
creating backup and restore software, handling Uniform Resource Identifiers
(URIs), a MIME Recogniser Framework for recognising data types and a set of
application utilities. </p>
<p><b>Notes:</b><ul>
<li><p>Symbian platform supports ported versions of C++ Standard Library (<xref href="http://www.stlport.org/" scope="external">STLport</xref> v4) and Standard
C++ Library (STLport v5). It is recommended that you use <xref href="GUID-2C5B58F2-6BD2-5C2B-8E1B-CFB3D7EB6ED9.dita">Standard
C++ Library (STLport v5)</xref> to take advantage of it's latest features.</p></li>
<li><p>Open C &amp; C++ API reference information and Open C++ examples are
not part of Symbian Developer Library. For this information,
refer to <xref href="http://library.forum.nokia.com/topic/S60_5th_Edition_Cpp_Developers_Library/GUID-9AC4D4E1-A399-49DB-89D6-395A86B7D556.html" scope="external">S60 5th Edition C++ Developer's Library</xref> on Forum Nokia
Web site.</p></li>
</ul></p>
</conbody></concept>