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A

a command (debugger) : Debugger Commands
-A file test operator : Named Unary and File Test Operators
\A (string boundary) The rules of regular expression matching The fine print
-a switch, perl Global Special Arrays Switches
<a> tags Anchors Embedded Versus Referenced Content The <a> Tag The urn attribute The Anchor Object Anchor String.anchor()
a2p program a2p Translation from Awk and Sed
abbrev( ) : Text::Abbrev--Create an Abbreviatio...
abbreviations (see aliases)
about:cache URL : Security Holes and Security Hobbles
above attribute (<layer>) : The above, below, and z-index attributes
abs( ) Math Object Math.abs()
abs function : abs
absbottom alignment : The align attribute
absmiddle alignment : The align attribute
absolute font size : The size attribute URLs URLs Absolute and Relative URLs Uniform Resource Locators (URLs)
absolute value : abs
accept attribute (<input>) : File selection fields
accept function : accept
Accept header Accept Media Types and Subtypes
Accept section, CGI data file : The Accept Section
accept types : Accept Types and Content Types
Accept-Charset header : Accept-Charset
Accept-Encoding header : Accept-Encoding
Accept-Language header : Accept-Language
Accept-Ranges header : Accept-Ranges
access, domain-based : Restricting Access for Specified Domains
access counters How do I write an access counter script? User Access Counter graphic : Graphic Counter for web server Web Server Accesses Web Server Accesses
access operators : Array and Object Access Operators
access time, file stat utime
access.conf file Restricting Access for Specified Domains Configuring the Apache and NCSA Ser...
accessing information (see gateways)
accessing object properties (see objects)
$ACCUMULATOR (see $^A variable)
accumulator : Data Tainting in JavaScript
acos( ) Math Object Math.acos()
action attribute <form> tag Attributes The <form> Tag Form.action The FORM Tag Guestbook Hidden Fields with submit buttons : Submit and Reset Buttons <isindex> tag : Attributes <form> : The action attribute <isindex> : The action attribute <isiundex> tag : Internet Explorer HTML Exclusives
action buttons Action Buttons Multiple buttons in a single form
action property Form.action Properties
ActiveX technology Calling JavaScript from Applets Writing Applets
adding (see defining)
additive operators Additive Operators (see also + (plus))
addPt method : System Load Average
<address> tag <address> The <address> Tag
address-of operator (in C) : C Operators Missing from Perl
addresses Addresses The <address> Tag getting from hostnames gethostbyname getnetbyname IP addresses : The http server network, translating to names gethostbyaddr getnetbyaddr packed sockaddr : getsockname user (see REMOTE_ADDR variable)
AddType directive Running CGI Scripts Configuration Creating Dynamic Home Pages
administration : Who Are the WebMasters?
Advanced Research Projects Agency (ARPA) : In the Beginning
&AF_INET subroutine : Socket I/O in Perl
Age header : Age
alarm command (Perl) Archie alarm
alert( ) Client-Side JavaScript Examples Methods Dialogs in onUnload() Executable Content: JavaScript in a... Exploring JavaScript Windows and Frames Simple Dialogs Window.alert()
aliases GetOptions( ) and : Aliases and abbreviations symbol table entries : Typeglobs and Filehandles with statement for : with
align attribute <align> tag : Attributes <applet> tag The align attribute Attributes <caption> tag Attributes The <caption> Tag Tags of Contention The align and valign attributes <col> tag Attributes The <col> tag <colgroup> tag : Attributes <div> tag Attributes The align attribute <embed> : The align, border, height, width, h... <h#> (heading) tags Attributes The align attribute <hr> tag Attributes The align attribute <iframe> tag Attributes The align attribute <img> Inline Images The align attribute <input> tag : Custom buttons <marquee> The align attribute Attributes <object> The align, border, height, width, h... Attributes <p> The align attribute Attributes <spacer> Creating blocks of space Attributes <table> tag Attributes The <table> Tag <th> and <td> The align and valign attributes Attributes The <th> and <td> Tags <tr> tag Attributes The <tr> Tag The align attribute
alignment Format Variables applets : Attributes centering text : The <center> Tag columns (see column layout) forms and : Good Form, Old Chap frames : The align attribute in headers : The align attribute images The align attribute Centering an image layers The left and top attributes The top and left attributes paragraphs : The align attribute table captions Attributes The <caption> Tag Tags of Contention The align and valign attributes table cell contents The <table> Tag The align and valign attributes tables Missing Features The <table> Tag table rows The align attribute The valign attribute text The align attribute <center> text style properties for The text-align property The vertical-align property whitespace : Creating blocks of space
alignment sections : The align attribute
alink attribute (<body>) Document Properties Document.alinkColor The link, vlink, and alink attributes Attributes
alinkColor property Document Properties Document.alinkColor Properties
Allow header : Allow
alphabetical order : String Operators
alt attribute <applet> Attributes The alt attribute Supporting incompatible browsers <area> : The alt attribute <img> tag Attributes The alt attribute
alternate behavior (<marquee>) : The behavior, direction, and loop a...
alternatives, matching The regular expression bestiary The rules of regular expression matching
ampersand (&) Programming with Style address-of operator (in C) : C Operators Missing from Perl bitwise AND operator Bitwise Operators Bitwise And (<tt CLASS=replaceable>... to delimit field information : Submit and Reset Buttons for entities Special text characters Character Entities JavaScript Entities Named Unary and File Test Operators Transferring the Form Data JavaScript Entities in filenames : open in key-value pairs : Sending Data to the Server prototype character : Prototypes for subroutine names Variables Subroutines in URLs : Transferring the Form Data && (logical AND) operator C-style Logical (Short Circuit) Ope... Miscellaneous Differences Logical And (<tt CLASS=replaceable>... Logical and, or, not, and xor &&= (assignment) operator : Assignment Operators &{} for entities Core Language Changes JavaScript Entities &= (assignment) operator : Assignment Operators
analog clock program Final PostScript Example: Analog Clock Analog Clock
anchor( ) String.anchor() Methods
anchors (Anchor objects) The Anchor Object Anchor Anchor Object Nailing Things Down The rules of regular expression matching (see also <a>)
anchors[ ] property Properties The Anchor Object Anchor Document.anchors[]
AND (&) operator : (see ampersand (&))
AND (&&) operator : (see ampersand (&))
angle brackets HTML Tag Syntax (see also <; >)
angle operator Line input (angle) operator Switches
animated clock program : Animated Clock
AnimateObject( ) : Live3D
animation Animation Server Push frame-by-frame (GIF) : Interlacing, transparency, and animation on status bar : The Status Line of text Animated Text The style and class attributes
anonymous array composer : The Anonymous Array Composer FTP : Using Anonymous FTP functions The Function() Constructor Function Object hash composer : The Anonymous Hash Composer pipes : Anonymous pipes scalars : Tying Scalars subroutine composer : The Anonymous Subroutine Composer subroutines : Subroutines
anonymous FTP : The ftp user and password
<answer> tags : Quiz/Test Form Application
AnyDBM_File module : AnyDBM_File--Provide Framework for ...
Apache server : WWW Server Information
apostrophe (') String Literals Escape Sequences in String Literals
appCodeName property The Navigator, MimeType, and Plugin... Navigator.appCodeName Properties
appearance of text (see text)
append mode, files : CGI Side Includes
appending elements to arrays : push
Apple Macintosh (see Macintosh)
AppleScript AppleScript (Macintosh Only) Other Languages on Macintosh Servers decoding forms in : AppleScript
<applet> tags <applet> The <applet> Tag Supporting incompatible browsers Content disappears upon resize The JavaObject Object
applets Applets The type and valuetype attributes Content disappears upon resize Interact with Applets The JavaObject Object Interacting with Applets Document.applets[] <applet> Internet Explorer 3.0 and : Interacting with Applets JSObject objects in : Using JSObjects in Applets LiveConnect with : Accessing applets before they are loaded
applets[ ] property Properties The JavaObject Object Interacting with Applets Interacting with Applets Document.applets[]
application/ media types Media Types and Subtypes application/x-www-form-urlencoded encoding The application/x-www-form-urlencod... The <form> Tag
applications, executable Applets The type and valuetype attributes
applications, CGI (see programs, CGI)
appName property The Navigator, MimeType, and Plugin... Navigator.appName Properties
appVersion property The Navigator, MimeType, and Plugin... Navigator.appVersion Properties
Archie Some Working CGI Applications Overview Archie
archive attribute (<applet>) : The archive attribute
arctangents : atan2
Area object : Area
<area> tags The ismap and usemap attributes The <area> Tag The title attribute <area> Miscellaneous Changes The Link Object Area
$ARG ($_) variable The fine print Global Special Variables English--Use English or awk Names f... angle operator and : Line input (angle) operator forearch statement and : Foreach loops glob function with : Filename globbing operator grep function and : grep map function and : map
arguments, function Functions Defining and Invoking Functions The arguments[] Array Function arguments and variables ar... Function.arguments[] verifying number of : The arguments[] Array
arguments[ ] property Properties The arguments[] Array Function.arguments[]
@ARGV array Line input (angle) operator Global Special Arrays Getopt::Long--Extended Processing o...
ARGV filehandle : Global Special Filehandles
$ARGV variable : Global Special Variables
arithmetic functions, Perl : Arithmetic Functions
arithmetic operators Arithmetic Operators Ideographic Unary Operators Overloadable operations Arithmetic and Mathematical Functions Arithmetic Operators
ARPA (Advanced Research Projects Agency) : In the Beginning
Array( ) Creating Arrays Arrays in Navigator 2.0 Array Object
arrays (Array objects) Core Language Changes Array Array.join() Array.reverse() Array.length Array.sort() Array Object Pluralities Built-in Data Types Arrays Arrays JavaArray Object Array Object @_ array Subroutines English--Use English or awk Names f... Debugger Bugs anonymous, references to : The Anonymous Array Composer associative Objects Objects as Associative Arrays Multidimensional Arrays (see also hashes) in awk : a2p built-in : Built-in Arrays comparing : Equality (==) creating : Object Creation Operator (new) defining : Creating Arrays elements of Array Elements appending to array : push deleting pop shift splice Removing Elements from an Array first : Global Special Variables last : List Values and Arrays methods for manipulating : Array Methods overwriting : Arrays in Navigator 2.0 prepending : unshift global : Global Special Arrays of hashes, code for : Arrays of Hashes initializing with x operator : Multiplicative Operators JavaArray object The JavaArray Object The JavaArray Object JavaArray JavaArray.length length of : List Values and Arrays length property : Array Length Property lists and : List Values and Arrays looping through : for...in methods for : Array Methods multidimensional A Brief Tutorial: Manipulating List... Arrays of Arrays Multidimensional Arrays names for : Variables as objects : Array/Object Dual Nature operators for : Array and Object Access Operators performance and : Time Efficiency Perl and Array and List Functions Special Arrays pop function and : pop replacing/removing elements : splice subscript separator (see $; variable) typing : Tying Arrays variables of : Interpolating array values
arrow (->) operator The Arrow Operator Using the Arrow Operator Object-Oriented Scaling Tips
articles, news (see NNTP)
artificial languages : Natural and Artificial Languages
ASCII converting POD data to : Pod::Text--Convert POD Data to Form... converting to characters : chr values for characters : ord
asin( ) : Math Object
<ask> tag : Quiz/Test Form Application
assertions : The rules of regular expression matching
assign( ) Core Language Changes The assign() Method Copying Objects with the assign() Method Object.assign() Methods
assigning to lists : List Values and Arrays by reference/value : By Value vs. By Reference
assignment (=) operator Assignment Operators Assignment Operators Assignment Operators The assign() Method Previous Perl Traps
assignment statements Variable Declaration Expression Statements
associative arrays Objects Objects as Associative Arrays Multidimensional Arrays ((see also hashes)
associativity Operators Operator Associativity
asterisk (*)

Named Unary and File Test Operators
Multiplication (*)
dereference operator (in C) : C Operators Missing from Perl
frame size : Frame Layout
as media type wildcard : Media Types and Subtypes
multiplicative operator : Multiplicative Operators
prototype character : Prototypes
quantifier

Quantifiers
The rules of regular expression matching

for typeglob names

Typeglobs and Filehandles
Passing Symbol Table Entries (Typeglobs)

** (exponentiation) operator : Exponentiation
**= (assignment) operator : Assignment Operators
*= (assignment) operator : Assignment Operators
asynchronous execution : Event Handlers
at sign Previous Perl Traps for array names : Variables in debugger : Using the Debugger in picture lines : Formats prototype character : Prototypes @_ array Subroutines English--Use English or awk Names f... Debugger Bugs
atan( ) Math.atan() atan2 Math Object
atan2( ) Math Object Math.atan2()
$atime file statistic : stat
atoms The regular expression bestiary The rules of regular expression matching
attributes, HTML tag HTML Tag Syntax HTML Tags The Syntax of a Tag
audio Background Audio The loop attribute Referencing Audio, Video, and Images audio/ media types : Media Types and Subtypes <bgsound> tag The <bgsound> Tag The loop attribute
authentication of domains : Restricting Access for Specified Domains of users : User Authentication and Identification
authoring (see writing HTML documents)
Authorization header : Authorization
AUTH_TYPE environment variable CGI Environment Variables Using Environment Variables
autodecrement (--) operator Autoincrement and Autodecrement Ope... Autoincrement and Autodecrement Switches Overloadable operations Decrement (--)
autogeneration : Autogeneration
autoincrement (++) operator Autoincrement and Autodecrement Ope... Autoincrement and Autodecrement Overloadable operations Increment (++)
AUTOLOAD subroutine Autoloading A Class Is Simply a Package Method Autoloading
AutoLoader module : AutoLoader--Load Functions Only on ...
autoloading AutoLoader--Load Functions Only on ... stubs for : Devel::SelfStubber--Generate Stubs ...
automatic data type conversion : Automatic Data Type Conversion dynamic module loading : DynaLoader--Automatic Dynamic Loadi... garbage collection : Garbage Collection line-end processing : Switches sorting of hashes : In-memory databases
automation, document Supporting Document Automation The n attribute
autosplit mode : Switches
AutoSplit module : AutoSplit--Split a Module for Autol...
average system load Another Example: System Load Average System Load Average
awk C Shell (UNIX Only) C Shell Awk Traps converting to/from Perl Translation from Awk and Sed a2p variable names : vars--Predeclare Global Variable Names Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z