92.

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Numbers

200 OK status code: 3.3.1.3. Specifying status codes

204 No Response status code: 3.3.1.3. Specifying status codes

301 Moved Permanently status code: 3.3.1.3. Specifying status codes

302 Found status header: 3.3.1.3. Specifying status codes

307 Temporary Redirect status code: 3.3.1.3. Specifying status codes

400 Bad Request status code: 3.3.1.3. Specifying status codes

401 Unauthorized status code: 3.3.1.3. Specifying status codes

403 Forbidden status code: 3.3.1.3. Specifying status codes

404 Not Found status code: 3.3.1.3. Specifying status codes

405 Not Allowed status code: 3.3.1.3. Specifying status codes

408 Request Timed Out status code: 3.3.1.3. Specifying status codes

500 Internal Server Error: 3.1.1.3. STDERR

3.3. CGI Output

5.5.1. Dying Gracefully

CGI::Carp and: 5.5.2. CGI::Carp

die function and: 15.2.4. Trap die

HTTP header printing and: 5.5.3. Error Subroutines

malformed HTTP content type headers, causing: 15.1.4. "Malformed" Header

status header: 3.3.1.3. Specifying status codes

503 Service Unavailable: 3.3.1.3. Specifying status codes

504 Gateway Timed Out status code: 3.3.1.3. Specifying status codes

Symbols

* (asterisk) symbol (quantity identifier), XML elements: 14.3. Document Type Definition

\ (backslash)

double quotes in HTML, escaping with: 5.4.1. Lots of print Statements

escaping @ prefix with: 13.5.4. Image Processing

escaping characters with: 10.1.4. Delimiters

[] (brackets): 6.4.2.1. Embperl code blocks

6.4.2.1. Embperl code blocks

16.2. Coding Guidelines

*/* (media types): 2.6.1. Media Type

% (percent sign)

hashes, use of: 12.3.1. Search Application

URL encoding: 2.1.1. Elements of a URL

for date/time format: 6.2.4. Tailoring SSI Output

+ (plus sign)

encoding spaces in URLs: 2.1.3. URL Encoding

keywords, separating in queries: 5.2.2.3. Index queries

URL encoding: 2.1.1. Elements of a URL

XML elements: 14.3. Document Type Definition

#! (pound-bang) line, CGI applications: 15.1.2. The Pound-Bang

# (pound sign) in server side includes: 6.2.7. Common Errors

@ prefix, escaping with backslash (\\\\) character: 13.5.4. Image Processing

? (question mark) in place of * in XML elements: 14.3. Document Type Definition

~! (tilde escapes), mailx and mail programs: 9.5. mailx and mail

%attributes, hash table of attributes declared inside XML element: 14.5. CGI Gateway to XML Middleware

$CGI variable: 10.4.2.2. Address book CGI script

determining flow of control through CGI script: 10.4.2.2. Address book CGI script

$CGI::HEADERS_ONCE variable: 5.5.3. Error Subroutines

$CGI::POST_MAX: 5.2.4. File Uploads with CGI.pm

limiting user shopping carts with: 11.2. Hidden Fields

$db, using: 10.2.1. DB_File

$element, start element name (XML): 14.5. CGI Gateway to XML Middleware

$expat, reference to XML::Parser object: 14.5. CGI Gateway to XML Middleware

<!--# directives (see Server Side Includes)

#PCDATA: 14.3. Document Type Definition

$q prefix CGI.pm module: 5.1.3. Standard and Object-Oriented Syntax

@related, references to related URLs: 14.5. CGI Gateway to XML Middleware

#REQUIRED keyword, XML documents: 14.3. Document Type Definition

@subrelated, URLs related to first-level URL: 14.5. CGI Gateway to XML Middleware

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