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<html><head><title>Index: O</title></head><body bgcolor="#FFFFFF" text="#000000"><!-- START OF BODY --><!-- TOP BANNER --><p><img src="../gifs/smbanns.gif" usemap="#banner-map" border=0 alt="Book Home" ></a></p><map name="banner-map"><area alt="Book Title" href="../index.htm" coords="1,-2,616,66" shape="rect"><area alt="Search this book" href="../jobjects/fsearch.htm" coords="629,-11,726,25" shape="rect"></map><!-- TOP INDEX LINKS --><p><a href="idx_0.htm">Symbols & Numbers</a>| <a href="idx_a.htm">A</a>| <a href="idx_b.htm">B</a>| <a href="idx_c.htm">C</a>| <a href="idx_d.htm">D</a>| <a href="idx_e.htm">E</a>| <a href="idx_f.htm">F</a>| <a href="idx_g.htm">G</a>| <a href="idx_h.htm">H</a>| <a href="idx_i.htm">I</a>| <a href="idx_j.htm">J</a>| <a href="idx_k.htm">K</a>| <a href="idx_l.htm">L</a>| <a href="idx_m.htm">M</a>| <a href="idx_n.htm">N</a>| <a href="idx_o.htm">O</a>| <a href="idx_p.htm">P</a>| <a href="idx_q.htm">Q</a>| <a href="idx_r.htm">R</a>| <a href="idx_s.htm">S</a>| <a href="idx_t.htm">T</a>| <a href="idx_u.htm">U</a>| <a href="idx_v.htm">V</a>| <a href="idx_w.htm">W</a>| <a href="idx_x.htm">X</a>| <a href="idx_y.htm">Y</a>| <a href="idx_z.htm">Z</a></FONT><!-- INDEX SECTION BODY --><H2>Index: O</H2><DL><!-- ========================== --><a name="o-command-CPAN.pm"><dt>o command (CPAN.pm): <a href="../ch02_04.htm#INDEX-116">2.4.4. Installing Modules with the CPAN Module</a></dt><!-- ========================== --><a name="O-command-Perl-debugger"><dt>O command (Perl debugger): <a href="../ch06_02.htm#INDEX-1156">6.2. Debugger Commands</a></dt><!-- ========================== --><a name="-O-file-test-operator"><dt>-O file test operator: <a href="../ch04_05.htm#INDEX-538">4.5.8. File Test Operators</a></dt><!-- ========================== --><a name="O-module"><dt>O module: <a href="../ch08_165.htm#INDEX-1522">8.165. O</a></dt><!-- ========================== --><a name="-O-option-dprofpp"><dt>-O option (dprofpp): <a href="../ch06_05.htm#INDEX-1194">6.5. The Perl Profiler</a></dt><!-- ========================== --><a name="-o-option-perlcc"><dt>-o option (perlcc): <a href="../ch03_04.htm#INDEX-192">3.4. The Perl Compiler</a></dt><!-- ========================== --><a name="o-pattern-match-modifier"><dt>o pattern match modifier: <a href="../ch04_06.htm#INDEX-606">4.6.1. Pattern-Matching Operators</a></dt><!-- ========================== --><a name="object-oriented-programming"><dt>object-oriented programming: <a href="../ch07_03.htm#INDEX-1252">7.3. Object-Oriented Perl</a></dt><!-- ========================== --><a name="objects"><dt>objects: <a href="../ch07_03.htm#INDEX-1253">7.3. Object-Oriented Perl</a></dt><dd><dl> <a name="functions-for"> <dt>functions for: <a href="../ch05_01.htm#INDEX-889">5.1. Perl Functions by Category</a></dt> <a name="instance-vs.-class-methods"> <dt>instance vs. class methods: <a href="../ch07_04.htm#INDEX-1260">7.4. Object Syntax</a></dt> </dl></dd><!-- ========================== --><a name="Objects-style-XML-:-:Parser"><dt>Objects style (XML::Parser): <a href="../ch13_04.htm#INDEX-1846">13.4. XML::Parser Styles</a></dt><!-- ========================== --><a name="obtaining-Perl-modules"><dt>obtaining Perl modules: <a href="../ch02_02.htm#INDEX-40">2.2. How Is CPAN Organized?</a></dt><dd><dl> <dt><a href="../ch02_04.htm#INDEX-80">2.4. Getting and Installing Modules</a></dt></dl></dd><!-- ========================== --><a name="obtaining-Perl-source-code"><dt>obtaining Perl source code: <a href="../ch02_01.htm#INDEX-29">2. Installing Perl</a></dt><!-- ========================== --><a name="oct"><dt>oct( ): <a href="../ch05_01.htm#INDEX-1004">5. Function Reference</a></dt><!-- ========================== --><a name="ODBC-Extension"><dt>ODBC Extension: <a href="../ch24_01.htm#INDEX-3473">24. ODBC Extension for Win32</a></dt><!-- ========================== --><a name="ODBM_File-module"><dt>ODBM_File module: <a href="../ch08_166.htm#INDEX-1523">8.166. ODBM_File</a></dt><!-- ========================== --><a name="-offvalue-option"><dt>-offvalue option</dt><dd><dl> <a name="Checkbutton-widget"> <dt>Checkbutton widget: <a href="../ch21_05.htm#INDEX-2854">21.5. The Checkbutton Widget</a></dt> <a name="Menubutton-widget"> <dt>Menubutton widget: <a href="../ch21_14.htm#INDEX-3071">21.14.1. Menu Item Options</a></dt> </dl></dd><!-- ========================== --><a name="$OFMT-$#-variable"><dt>$OFMT ($#) variable: <a href="../ch04_04.htm#INDEX-329">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="$OFS-$-variable"><dt>$OFS ($,) variable: <a href="../ch04_04.htm#INDEX-313">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="-ok-option-perlbug"><dt>-ok option (perlbug): <a href="../ch06_06.htm#INDEX-1223">6.6. The perlbug Program</a></dt><!-- ========================== --><a name="-okay-option-perlbug"><dt>-okay option (perlbug): <a href="../ch06_06.htm#INDEX-1224">6.6. The perlbug Program</a></dt><!-- ========================== --><a name="OLE-automation"><dt>OLE automation: <a href="../ch23_01.htm#INDEX-3430">23. OLE Automation</a></dt><!-- ========================== --><a name="on_action-SOAP-:-:Lite"><dt>on_action( ) (SOAP::Lite): <a href="../ch14_02.htm#INDEX-1884">14.2.1. SOAP::Lite Methods</a></dt><!-- ========================== --><a name="on_debug-SOAP-:-:Lite"><dt>on_debug( ) (SOAP::Lite): <a href="../ch14_02.htm#INDEX-1886">14.2.1. SOAP::Lite Methods</a></dt><!-- ========================== --><a name="on_fault-SOAP-:-:Lite"><dt>on_fault( ) (SOAP::Lite): <a href="../ch14_02.htm#INDEX-1885">14.2.1. SOAP::Lite Methods</a></dt><!-- ========================== --><a name="on_nonserialized-SOAP-:-:Lite"><dt>on_nonserialized( ) (SOAP::Lite): <a href="../ch14_02.htm#INDEX-1887">14.2.1. SOAP::Lite Methods</a></dt><!-- ========================== --><a name="-onvalue-option"><dt>-onvalue option</dt><dd><dl> <a name="Checkbutton-widget"> <dt>Checkbutton widget: <a href="../ch21_05.htm#INDEX-2855">21.5. The Checkbutton Widget</a></dt> <a name="Menubutton-widget"> <dt>Menubutton widget: <a href="../ch21_14.htm#INDEX-3072">21.14.1. Menu Item Options</a></dt> </dl></dd><!-- ========================== --><a name="Opcode-module"><dt>Opcode module: <a href="../ch08_167.htm#INDEX-1524">8.167. Opcode</a></dt><!-- ========================== --><a name="open"><dt>open( ): <a href="../ch05_01.htm#INDEX-1005">5. Function Reference</a></dt><dd><dl> <a name="DirHandle-module"> <dt>DirHandle module: <a href="../ch08_59.htm#INDEX-1387">8.59. DirHandle</a></dt> <a name="Mail-:-:Folder-module"> <dt>Mail::Folder module: <a href="../ch16_02.htm#INDEX-2127">16.2.3. Handle Folders with Mail::Folder</a></dt> <a name="Mail-:-:Mailer-module"> <dt>Mail::Mailer module: <a href="../ch16_02.htm#INDEX-2070">16.2.1. Send Email with Mail::Mailer</a></dt> <a name="Mail-:-:Send-module"> <dt>Mail::Send module: <a href="../ch16_02.htm#INDEX-2075">16.2.2. Better Header Control with Mail::Send</a></dt><dd><dl> <dt><a href="../ch16_02.htm#INDEX-2085">16.2.2. Better Header Control with Mail::Send</a></dt> </dl></dd> <a name="PerlIO"> <dt>PerlIO: <a href="../ch04_09.htm#INDEX-784">4.9.1. Perl 5.8 and PerlIO</a></dt> <a name="Win32-:-:Mutex-module"> <dt>Win32::Mutex module: <a href="../ch22_09.htm#INDEX-3296">22.9. Win32::Mutex</a></dt> <a name="Win32-:-:Semaphore-module"> <dt>Win32::Semaphore module: <a href="../ch22_16.htm#INDEX-3369">22.16. Win32::Semaphore</a></dt> </dl></dd><!-- ========================== --><a name="Open-Win32-:-:Registry"><dt>Open( ) (Win32::Registry): <a href="../ch22_15.htm#INDEX-3353">22.15. Win32::Registry</a></dt><!-- ========================== --><a name="opendir"><dt>opendir( ): <a href="../ch05_01.htm#INDEX-1006">5. Function Reference</a></dt><!-- ========================== --><a name="OpenLDAP"><dt>OpenLDAP: <a href="../ch19_01.htm#INDEX-2347">19. Lightweight Directory Access with Net::LDAP</a></dt><!-- ========================== --><a name="OpenRequest-Win32-:-:Internet"><dt>OpenRequest( ) (Win32::Internet): <a href="../ch22_07.htm#INDEX-3287">22.7.3. HTTP Functions</a></dt><!-- ========================== --><a name="OpenURL-Win32-:-:Internet"><dt>OpenURL( ) (Win32::Internet): <a href="../ch22_07.htm#INDEX-3259">22.7.1. General Internet Methods</a></dt><!-- ========================== --><a name="operators"><dt>operators: <a href="../ch04_05.htm#INDEX-427">4.5. Operators</a></dt><!-- ========================== --><a name="ops-module"><dt>ops module: <a href="../ch08_168.htm#INDEX-1525">8.168. ops</a></dt><!-- ========================== --><a name="Optionmenu-widget-Perl-Tk"><dt>Optionmenu widget (Perl/Tk): <a href="../ch21_16.htm#INDEX-3111">21.16. The Optionmenu Widget</a></dt><!-- ========================== --><a name="-options-option-Optionmenu"><dt>-options option (Optionmenu): <a href="../ch21_16.htm#INDEX-3114">21.16. The Optionmenu Widget</a></dt><!-- ========================== --><a name="OR-|-operator-bitwise"><dt>OR (|) operator, bitwise: <a href="../ch04_05.htm#INDEX-568">4.5.10. Bitwise Operators</a></dt><!-- ========================== --><a name="OR-||-operator-logical"><dt>OR (||) operator, logical: <a href="../ch04_05.htm#INDEX-564">4.5.9. Logical Operators</a></dt><!-- ========================== --><a name="or-OR-operator"><dt>or (OR) operator: <a href="../ch04_05.htm#INDEX-562">4.5.9. Logical Operators</a></dt><!-- ========================== --><a name="oraperl-package"><dt>oraperl package: <a href="../ch12_02.htm#INDEX-1754">12.2. Design of DBI</a></dt><!-- ========================== --><a name="ord"><dt>ord( ): <a href="../ch05_01.htm#INDEX-1007">5. Function Reference</a></dt><!-- ========================== --><a name="-orient-option"><dt>-orient option</dt><dd><dl> <a name="Scale-widget"> <dt>Scale widget: <a href="../ch21_13.htm#INDEX-3042">21.13. The Scale Widget</a></dt> <a name="Scrollbar-widget"> <dt>Scrollbar widget: <a href="../ch21_09.htm#INDEX-2914">21.9. The Scrollbar Widget</a></dt> </dl></dd><!-- ========================== --><a name="$ORS-$-----variable"><dt>$ORS ($) variable: <a href="../ch04_04.htm#INDEX-316">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="$OS_ERROR-$!-variable"><dt>$OS_ERROR ($!) variable: <a href="../ch04_04.htm#INDEX-334">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="$OSNAME-$^O-variable"><dt>$OSNAME ($^O) variable: <a href="../ch04_04.htm#INDEX-368">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="our"><dt>our( ): <a href="../ch05_01.htm#INDEX-1008">5. Function Reference</a></dt><!-- ========================== --><a name="output"><dt>output: <a href="../ch05_01.htm#INDEX-876">5.1. Perl Functions by Category</a></dt><dd><dl> <a name="formats-for"> <dt>formats for: <a href="../ch04_12.htm#INDEX-795">4.12. Formats</a></dt> </dl></dd><!-- ========================== --><a name="$OUTPUT_AUTOFLUSH-$|-variable"><dt>$OUTPUT_AUTOFLUSH ($|) variable: <a href="../ch04_04.htm#INDEX-416">4.4.6. Filehandle Special Variables</a></dt><!-- ========================== --><a name="OutputCP-Win32-:-:Console"><dt>OutputCP( ) (Win32::Console): <a href="../ch22_02.htm#INDEX-3194">22.2. Win32::Console</a></dt><!-- ========================== --><a name="$OUTPUT_FIELD_SEPARATOR-$-variable"><dt>$OUTPUT_FIELD_SEPARATOR ($,) variable: <a href="../ch04_04.htm#INDEX-312">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="$OUTPUT_RECORD_SEPARATOR-$-----variable"><dt>$OUTPUT_RECORD_SEPARATOR ($) variable: <a href="../ch04_04.htm#INDEX-315">4.4.1. Global Special Variables</a></dt><!-- ========================== --><a name="outputxml-SOAP-:-:Lite"><dt>outputxml( ) (SOAP::Lite): <a href="../ch14_02.htm#INDEX-1876">14.2.1. SOAP::Lite Methods</a></dt><!-- ========================== --><a name="=over-command-pod"><dt>=over command (pod): <a href="../ch04_13.htm#INDEX-833">4.13.1. Paragraph Tags</a></dt><!-- ========================== --><a name="overload-module"><dt>overload module: <a href="../ch08_169.htm#INDEX-1526">8.169. overload</a></dt><!-- ========================== --><a name="overridedirect-Frame-widget"><dt>overridedirect( ) (Frame widget): <a href="../ch21_18.htm#INDEX-3156">21.18.1. Toplevel Methods</a></dt><!-- ========================== --><a name="overview_fmt-Net-:-:NNTP"><dt>overview_fmt( ) (Net::NNTP): <a href="../ch17_02.htm#INDEX-2234">17.2.2. 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