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# Index: O

object-oriented syntax, CGI.pm module: 5.1.3. Standard and Object-Oriented Syntax
objects
  CGI
    HTTP headers, printing in error handling: 5.5.3. Error Subroutines
  CGI.pm
    error messages for: 5.2.4. File Uploads with CGI.pm
    $q prefix: 5.1.3. Standard and Object-Oriented Syntax
  Document Object Model, defining for HTML and XML documents: 7.1.1. History
  HTML::Template, importing parameters from CGI.pm: 6.3.1. Syntax
  Perl, DBM files, storing as: 10.2.2. MLDBM
  WDDX, interpreting with JavaScript: 7.3.2. Example
onChange handler (JavaScript)
  assigning multiple statements to: 7.2.1.1. Validating elements
  filed validation functions, calling: 7.2.1.3. Validation example
  validating HTML form elements: 7.2.1.1. Validating elements
onCheck attribute: 4.2.3.4. Checkboxes
onClick attribute
  image buttons: 4.2.3.8. Image buttons
  plain buttons: 4.2.3.9. Plain buttons
  reset buttons: 4.2.3.7. Reset buttons
  submit buttons: 4.2.3.6. Submit buttons
onFocus, onBlur, and onChange attributes: 4.2.3.1. Text fields
online software store (example): 8.2.5. Trusting the Browser
onSubmit handler (JavaScript): 4.2.2. The <FORM> Tag
  4.2.3.6. Submit buttons
  7.2.1.2. Validating submits
  7.3.2. Example
open function: 15.2.3. Is It Open?
  PID of child process, checking: 15.2.3. Is It Open?
  special, instigating fork: 8.2.4. fork and exec
open source modules for Perl on CPAN: 1.3.1. Why Perl?
open system command: 15.2.2. Check Status of System Calls
opening and closing tags: 14.2. An Introduction to XML
  (see also closing tags)
  HTML::Template commands: 6.3.1. Syntax
  XML, use in: 14.2. An Introduction to XML
opening uploaded files, limiting attempts: 5.2.4. File Uploads with CGI.pm
operating systems
  binary and text files, distinguishing: 15.2.7. Use binmode
  binmode function, support for: 13.2.1.1. binmode
  CGI scripts, differences in handling of: 1.2.2. Invoking CGI Scripts
  ColdFusion language, use on: 1.3.2. Alternatives to CGI
  end-of-file character, using: 15.3.3. Running Scripts from the Command Line
  file names, variations in: 5.2.4. File Uploads with CGI.pm
  forward slashes (/) separating directories: 12.3.1. Search Application
  gcc compiler, obtaining pre-built binary of: B.1.1. Installing Modules
  line endings
    CGI scripts, not matching: 15.1.3. Line Endings
    end-of-line characters, translating to \\\\n: 5.2.4. File Uploads with CGI.pm
    News module (example)differences in: 3.3.1.1. Outputting documents
  not using newlines, calling binmode for: 3.4.1. Check the Client Browser
  Perl
    allowing to fork: 8.2.3. Security Strategies
    speed differences in: 1.3.1. Why Perl?
    storage locations on different: 15.1.2. The Pound-Bang
  TrueType fonts, support of: 13.5.4. Image Processing
operators
  -e operator: 13.5.4. Image Processing
  -M operator: 6.2. Server Side Includes
    12.3.1. Search Application
  -T operator: 12.2. Searching One by One, Take Two
    12.3. Inverted Index Search
  qq// operator: 5.4.2. Here Documents
  string manipulation in perl: 1.3.1. Why Perl?
optimization and efficiency, CGI programs: 17. Efficiency and Optimization
  FastCGI, using: 17.2. FastCGI
  mod_perl, using: 17.3. mod_perl
  Perl techniques for: 17.1. Basic Perl Tips, Top Ten
options: 12.3. Inverted Index Search
  (see also options under command line)
  -il options for case-insensitive searches: 12.1. Searching One by One
  GET requests: 4.1. Sending Data to the Server
  POST requests: 4.1. Sending Data to the Server
  sendmail: 9.4.1. Command-Line Options
Options directive, disabling ExecCGI option: 1.4.1.2. Configuring by extension
Oracle, PL/SQL programming language: 16.1.6. Separating Storage from Your Primary Code
order information, sending: 11.2. Hidden Fields
output: 3.1.1.3. STDERR
  (see also STDERR; STDOUT)
  alternatives to CGI.pm for generating: 5.4. Alternatives for Generating Output
  binary data, binmode function for: 13.2.1.1. binmode
  buffering (see buffering)
  CGI programs: 3.3. CGI Output
    buffering: 3.3.2. Complete (Non-Parsed) Headers
    caching by browsers: 5.3.1.3. Caching
    complete (non-parsed) headers: 3.3.2. Complete (Non-Parsed) Headers
    embedding in other programs: 6.2.6. Executing CGI Programs
    partial headers: 3.3.1. Partial Headers
    SSI parsing of: 6.2. Server Side Includes
    status codes and: 3.3.1.3. Specifying status codes
  CGI.pm
    HTML, generating with: 5.3. Generating Output with CGI.pm
    HTTP headers, generating with: 5.3. Generating Output with CGI.pm
  errors
    handling: 5.5. Handling Errors
    handling with CGI::Carp module: 5.5.2. CGI::Carp
    handling with error subroutines: 5.5.3. Error Subroutines
  existing components, modifying with Mason: 6.5.1. A Component Approach
  external applications, including in HTML documents: 6.2.1. Configuration
  Mason module, modifying: 6.5.1. A Component Approach
  from SSI directives: 6.2.4. Tailoring SSI Output
  stream, unbuffering: 15.2.6. Unbuffer Output Stream
outputting image data: 13.2. Outputting Image Data
  dynamic images
    in HTML: 13.2.2. Including Dynamic Images in HTML
  random images, CGI script returning: 13.2.1. An Example
overriding senders email addresses: 9.4.1. Command-Line Options

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