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Index: P

.pm files, loading associated files with: 11.1. Using Modules

\P (doesn't match property): 15.2. Effects of Character Semantics

\p (matches property): 15.2. Effects of Character Semantics

-P (C preprocessor) command-line switch: 19.1.3. Switches

-p (named pipe) file test: 3.10. Named Unary and File Test Operators

-p (print while looping) command-line switch: 19.1.3. Switches

pack: 25.2. Endianness and Number Width

pack function: 29.2.108. pack

template characters for: 29.2.108. pack
unpack function, Unicode characters and: 15.2. Effects of Character Semantics

package declaration: 4.8. Scoped Declarations

10. Packages
29.2.109. package

package variable

storing class data in: 12.8. Managing Class Data
(see also global variables)
2.5.1. Name Lookups
4.8.1. Scoped Variable Declarations
declaring: 29.2.107. our
threads, no protection in: 17.2.2. Data Access

packages: 1.2.1.4. Simplicities

2.5. Names

10. Packages

10.2. Autoloading

adding methods to existing: 12.5.2. Accessing Overridden Methods

binding variables to: 29.2.191. untie

bless function arguments: 12.4. Object Construction

blessing objects into: 29.2.7. bless

delimiters for: 10. Packages

identifiers: 10. Packages

importing semantics to: 29.2.192. use

in @ISA array, inheritance through: 12.5.1. Inheritance Through @ISA

methods and subroutines, resolving for: 12.3. Method Invocation

names for: 2.6.4. Or Leave the Quotes Out Entirely

24.3. Programming with Style

quoting: 12.3.4. Package-Quoted Classes

splitting for autoloading: 32.1.17. Module Installation Support

symbol tables, displaying: 20.3.3. Debugger Options

symbol tables for: 10.1. Symbol Tables

tying variables to: 29.2.178. tie

packed sockaddr: 29.2.54. getpeername

pads: 2.5. Names

page numbers: 28.2. Special Variables in Alphabetical Order

pager option (debugger): 20.3.3. Debugger Options

pages: 28.2. Special Variables in Alphabetical Order

PalmPilot, Perl modules for: 22.1. The CPAN modules Directory

paragraph mode: 19.1.3. Switches

28.2. Special Variables in Alphabetical Order

paragraph separator character: 2.2. Molecules

parameters (see arguments)

scalar context, providing for: 1.2.1.1. Singularities

subroutines

changing in place: 6.2.1. Tricks with Parameter Lists
working with: 6.2.1. Tricks with Parameter Lists

parent classes: 12.1. Brief Refresher on Object-Oriented Lingo

parent processes (see processes)

parse trees: 18.1. The Life Cycle of a Perl Program

18.2. Compiling Your Code
internal, keeping: 18.4. Compiler Backends
original, reconstituting and splicing into current parse tree: 18.5.1. The Bytecode Generator
reconstruction of: 18.1. The Life Cycle of a Perl Program

parsing: 21.1. How Perl Works

double-quote interpolation and regular expressions: 5.2. Pattern-Matching Operators
in the Perl compiler: 18.2. Compiling Your Code
text, Perl modules for: 22.1. The CPAN modules Directory

passing by reference: 6.2. Semantics

prototypes declaring function calls as: 8.1. What Is a Reference?

copying @_ values to my list: 6.2.1. Tricks with Parameter Lists

passing references: 6.3. Passing References

passwords: 29.2.164. srand

crypt function and: 29.2.20. crypt
passwd file: 29.2.61. getpwent
Perl modules for: 22.1. The CPAN modules Directory

PATH environment variable: 1.3.1. How to Do It

19.1.3. Switches
19.2. Environment Variables
security and: 23.1.2. Cleaning Up Your Environment

path for library searches, %INC: 28.2. Special Variables in Alphabetical Order

pathnames, module installed on Windows system: 11.1. Using Modules

pattern-binding operator: 1.7. Regular Expressions

pattern space: 28.2. Special Variables in Alphabetical Order

patterns

autosplitting via -a switch: 19.1.3. Switches
debugger, commands for matching: 20.2.5. Locating Code
fancy patterns: 5.10.1. Lookaround Assertions
replacements, changes in Perl versions: 24.1.5. Previous Perl Traps

patterns (and regular expressions): 1.7. Regular Expressions

5. Pattern Matching

29.2.92. m//

(see also m// operator[semi] m?? operator)

alphanumeric metasymbols: 5.3.1. Metasymbol Tables

assertions, defining your own: 5.10.4. Defining Your Own Assertions

assertions in: 5.1. The Regular Expression Bestiary

backreferences: 1.7.4. Backreferences

5.7.1. Capturing

capturing in: 5.7. Capturing and Clustering

character classes: 1.7. Regular Expressions

5.4. Character Classes

characters in: 5.1. The Regular Expression Bestiary

clustering in: 5.7.2. Clustering

conditional interpolation in: 5.10.3.5. Conditional interpolation

controlling matching: 5.9. Staying in Control

Perl flow control, deciding pattern execution: 5.9.1. Letting Perl Do the Work
regex compiler: 5.9.3. The Regex Compiler

extension syntax: 5.3.1. Metasymbol Tables

extensions, lookaround assertions: 5.10.1. Lookaround Assertions

finding duplicate words in paragraphs: 5.2.1. Pattern Modifiers

functions for matching: 29.1. Perl Functions by Category

generated: 5.10.3.1. Generated patterns

greedy matching: 1.7.1. Quantifiers

5.9.4. The Little Engine That /Could(n't)?/

grep function and: 29.2.72. grep

match-time code evaluation: 5.10.3.3. Match-time code evaluation

match-time pattern interpolation: 5.10.3.4. Match-time pattern interpolation

matching

operators for: 1.7. Regular Expressions

5.2. Pattern-Matching Operators

special variables for: 5.2. Pattern-Matching Operators

5.2.3. The s/// Operator (Substitution)

substrings corresponding to subpatterns: 5.2. Pattern-Matching Operators

matching precedence: 5.9.4. The Little Engine That /Could(n't)?/

metacharacters and metasymbols in: 5.3. Metacharacters and Metasymbols

metasymbols in: 5.3.2. Specific Characters

minimal matching: 1.7.2. Minimal Matching

modifiers, cloistering: 5.7.3. Cloistered Pattern Modifiers

modifiers for: 5.2.1. Pattern Modifiers

Perl code, interjecting into: 5.10.3. Programmatic Patterns

positions for matching: 5.6. Positions

programming style for: 5.10.3. Programmatic Patterns

quantifiers in: 5.1. The Regular Expression Bestiary

5.3.1. Metasymbol Tables
5.5. Quantifiers
5.9.4. The Little Engine That /Could(n't)?/

quotes in: 2.6.3. Pick Your Own Quotes

re pragma, altering default behavior of: 32.1.13. Perl Language Extensions and Internals

recursive matching: 5.10.3.4. Match-time pattern interpolation

security concerns: 23.3.2. Code Masquerading as Data

split function: 29.2.161. split

split function and: 5.2. Pattern-Matching Operators

study function: 29.2.166. study

substitution evaluation: 5.10.3.2. Substitution evaluations

terminating delimiter for: 5.2. Pattern-Matching Operators

Unicode properties, matching on: 15.2. Effects of Character Semantics

for untainting data: 23.1.1. Detecting and Laundering Tainted Data

PAUSE: 22.3. Creating CPAN Modules

pausing scripts: 29.2.156. sleep

PDL (Perl Data Language): 22.1. The CPAN modules Directory

performance: 0.1. The Pursuit of Happiness

measuring: 29.2.181. times
Perl programs, efficiency in: 24.2. Efficiency

period (see . (dot))

Perl

C, extending with

XSUB input and output: 21.3.3. XSUB Input and Output

C, using from: 21.3. Extending Perl (Using C from Perl)

creating extensions: 21.3.2. Creating Extensions
external C library functions, using: 21.3.4. Using Functions from an External C Library
XSUBs and XS language: 21.3.1. XS and XSUBs

CPAN (Comprehensive Perl Archive Network): 22. CPAN

embedding in C: 21.4. Embedding Perl (Using Perl from C)

compiling embedded programs: 21.4.1. Compiling Embedded Programs
Perl interpreter, adding to C program: 21.4.2. Adding a Perl Interpreter to Your C Program
Perl stack, manipulating from C: 21.4.5. Fiddling with the Perl Stack from C
Perl statement, evaluating from C: 21.4.4. Evaluating a Perl Statement from C
Perl subroutine, calling from C: 21.4.3. Calling a Perl Subroutine from C

extensions and internals, modules for: 32.1.13. Perl Language Extensions and Internals

location of: 19.1.2. Location of Perl

models to interface or emulate other languages: 22.1. The CPAN modules Directory

programming, common practices: 24. Common Practices

programs, life cycle of: 18.1. The Life Cycle of a Perl Program

special characters in: 1.2.1. Variable Syntax

thread programming in: 17.2. The Thread Model

use of Unicode, caveats on: 15.3. Caution, [ren2bold] Working

Perl Data Language (PDL) module: 9.1.4. Slices

Perl, history of: 27.1. History Made Practical

Perl interpreter: 1.3.1. How to Do It

18.1. The Life Cycle of a Perl Program

-a switch: 19.1.3. Switches

-c switch: 19.1.3. Switches

-d switch: 19.1.3. Switches

20. The Perl Debugger

-e switch: 1.3.1. How to Do It

19.1.3. Switches

-F switch: 19.1.3. Switches

19.1.3. Switches

-h switch: 19.1.3. Switches

-- switch: 19.1.3. Switches

-I switch: 19.1. Command Processing

19.1.3. Switches

-l switch: 19.1.3. Switches

-m switch: 19.1.3. Switches

-n switch: 19.1.3. Switches

-p switch: 19.1.3. Switches

-s switch: 19.1.3. Switches

20. The Perl Debugger

switches: 19.1.3. Switches

-T switch: 19.1.3. Switches

-u switch: 19.1.3. Switches

-v switch: 19.1.3. Switches

-w switch: 1.3.1. How to Do It

19.1.3. Switches

-x switch: 19.1. Command Processing

19.1.3. Switches

-0 switch: 19.1. Command Processing

19.1.3. Switches

perl interpreter program

-a switch: 28.2. Special Variables in Alphabetical Order

-d switch: 20.6. The Perl Profiler

sticky bit: 24.2.1. Time Efficiency

-T switch: 16.5.2. Networking Servers

23.1. Handling Insecure Data

-w switch: 33. Diagnostic Messages

Perl library: 22.2.3. Installing CPAN Modules into the Perl Library

Perl virtual machine: 18.3. Executing Your Code

18.3. Executing Your Code

perlapi manpage: 21.4.4. Evaluating a Perl Statement from C

perlcall manpage: 21.4.5. Fiddling with the Perl Stack from C

perlcc: 28.2. Special Variables in Alphabetical Order

perlcc command: 18.4. Compiler Backends

pbyscript resulting from: 18.5.1. The Bytecode Generator

$PERLDB: 28.2. Special Variables in Alphabetical Order

PERL5DB environment variable: 19.2. Environment Variables

debugger, customizing with: 20.3.2. Customizing with Init Files

PERLDB_OPTS environment variable

AutoTrace option, tracing compile-phase statements: 20.1. Using the Debugger
debugger customization via: 20.3. Debugger Customization

PERL_DEBUG_MSTATS environment variable: 19.2. Environment Variables

PERL_DESTRUCT_LEVEL environment variable: 19.2. Environment Variables

PERL_DESTRUCT_LEVEL variable: 12.6.1. Garbage Collection with DESTROY Methods

perldoc command: 0.4. Online Documentation

11. Modules
debugger invoking: 20.2.7. Miscellaneous Commands

perlembed manpage: 21.4. Embedding Perl (Using Perl from C)

eval_sv function, demonstrating: 21.4.4. Evaluating a Perl Statement from C

perlfork documentation: 16. Interprocess Communication

PERL5LIB environment variable: 19.2. Environment Variables

perllocale manpage: 29.2.82. lc

perlmodinstall manpage: 22.2. Using CPAN Modules

PERL5OPT environment variable: 19.2. Environment Variables

perlport documentation: 16. Interprocess Communication

PERL5SHELL environment variable: 19.2. Environment Variables

Perl/Tk: 24.2.6. User Efficiency

Perl modules for: 22.1. The CPAN modules Directory

$PERL_VERSION: 28.2. Special Variables in Alphabetical Order

28.2. Special Variables in Alphabetical Order

perlwin32 documentation: 16. Interprocess Communication

permissions: 29.2.171. sysopen

29.2.186. umask
file permission operators, interpreting: 3.10. Named Unary and File Test Operators
users, granting limited: 23.1. Handling Insecure Data

persistent data structures, providing via tie: 14.6. Tie Modules on CPAN

persistent Perl interpreter: 21.4. Embedding Perl (Using Perl from C)

pi: 29.2.4. atan2

picture lines: 7. Formats

29.2.41. format

pid (see processes)

PID (process ID): 28.2. Special Variables in Alphabetical Order

pipe function: 29.2.110. pipe

portability of: 25.5. Interprocess Communication (IPC)

pipelines

multistage, for input: 16.3.1. Anonymous Pipes
multistage, for output: 16.3.1. Anonymous Pipes

pipes

closing: 29.2.16. close

double-ended, opening with tied filehandle: 14.4.2. Creative Filehandles

in interprocess communication: 16.3. Pipes

named pipes: 16.3.4. Named Pipes
process talking to itself: 16.3.2. Talking to Yourself

IO::Pipe module: 32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities

open function, security risks posed by: 23.1.2. Cleaning Up Your Environment

read-only filehandles, opening: 29.2.104. open

plain old documentation (see pod)

pluralities: 1.2.1.2. Pluralities

.pm file extension: 10. Packages

pod

directives: 26.1.2. Pod Directives

embedding in Perl: 2.2. Molecules

format: 26. Plain Old Documentation

modules: 26.2. Pod Translators and Modules

Perl modules for: 22.1. The CPAN modules Directory

translators: 26.1. Pod in a Nutshell

26.2. Pod Translators and Modules

Pod::Checker module: 32.1.16. Documentation Support

Pod::Functions module: 32.1.16. Documentation Support

Pod::Html module: 32.1.16. Documentation Support

Pod::InputObjects module: 32.1.16. Documentation Support

Pod::Man module: 32.1.16. Documentation Support

Pod::Parser module: 32.1.16. Documentation Support

Pod::Select module: 32.1.16. Documentation Support

Pod::Text module: 32.1.16. Documentation Support

Pod::Text::Termcap module: 32.1.16. Documentation Support

Pod::Usage module: 32.1.16. Documentation Support

POE (Perl Object Environment): 22.1. The CPAN modules Directory

poetry in Perl: 27.2. Perl Poetry

pointers: 2.3. Built-in Data Types

references, unable to convert to: 2.6. Scalar Values
to strings: 29.2.108. pack

pointers (C language): 8. References

poll function: 32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities

polluting your namespace: 11.2.1. Module Privacy and the Exporter

polymorphism: 12.1. Brief Refresher on Object-Oriented Lingo

pop function: 9. Data Structures

29.2.111. pop

POP method: 14.2.1. Array-Tying Methods

popen function (C language): 21.4. Embedding Perl (Using Perl from C)

portability

Perl programs: 25. Portable Perl
of files and filesystems: 25.3. Files and Filesystems
functions, information on: 29.2. Perl Functions in Alphabetical Order
scripts using gethostent function: 29.2.49. gethostent
of signals: 25.4. System Interaction

porting, information on: 16. Interprocess Communication

porting, efficiency of: 24.2.5. Porter Efficiency

name/number translations for: 29.2.64. getservbyname
Perl, to operating systems: 22. CPAN

pos function: 5.6.4. Progressive Matching

5.6.5. Where You Left Off: The \G Assertion
29.2.112. pos

positional assertions: 5.6.5. Where You Left Off: The \G Assertion

ordering of matching, changing with: 5.8. Alternation

positions: 5.6. Positions

beginnings of strings, matching: 5.6.1. Beginnings: The \A and ^ Assertions
ends of strings, matching: 5.6.2. Endings: The \z, \Z, and $ Assertions
operators switching to character positions: 15.2. Effects of Character Semantics
position just after previous match, specifying: 5.6.5. Where You Left Off: The \G Assertion
precedence in pattern matching: 5.9.4. The Little Engine That /Could(n't)?/
substr function, manipulating with: 5.6. Positions
word boundaries, matching: 5.6.3. Boundaries: The \b and \B Assertions

positive lookahead assertions: 5.9.4. The Little Engine That /Could(n't)?/

5.10.1. Lookaround Assertions

POSIX classes: 5.4. Character Classes

POSIX module: 32.1.7. Operating System Interfaces

getattr function: 29.2.43. getc
getting exported functions and variables with: 11.1. Using Modules
signal blocking with: 16.1.4. Blocking Signals
strftime function: 29.2.88. localtime

POSIX-style character classes: 5.4.4. POSIX-Style Character Classes

possible matches, specifying set of: 5.8. Alternation

post-incremented (post-decremented) variables: 1.5.4. Unary Arithmetic Operators

postincrement and postdecrement operators: 3. Unary and Binary Operators

$POSTMATCH: 28.2. Special Variables in Alphabetical Order

Postscript, Perl modules for: 22.1. The CPAN modules Directory

PPM (Perl Package Manager): 22.2. Using CPAN Modules

22.2. Using CPAN Modules

pragmas: 1.2.1.4. Simplicities

4.7. Global Declarations
4.9. Pragmas
10. Packages
19.1.3. Switches
29.2.192. use
lexically scoped: 4.9. Pragmas
modules and: 11.1. Using Modules
names, capitalization in: 2.5. Names
use charnames: 2.6.2. String Literals

pre-extending arrays: 24.2.1. Time Efficiency

pre-incremented (pre-decremented) variables: 1.5.4. Unary Arithmetic Operators

precedence: 29. Functions

diagnostic messages: 33. Diagnostic Messages

key/value pair (hashes): 2.9. Hashes

logical operators: 1.5.5. Logical Operators

3.20. Logical and, or, not, and xor
12.3.3. Syntactic Snafus with Indirect Objects

modifiers vs. commas: 4.8.1. Scoped Variable Declarations

operator, table of: 3. Unary and Binary Operators

Perl versions, changes in: 24.1.5. Previous Perl Traps

regular expression matching: 5.9.4. The Little Engine That /Could(n't)?/

unary operators, higher than binary: 3.10. Named Unary and File Test Operators

predeclaring subroutines: 12.5.4. Method Autoloading

32.1.13. Perl Language Extensions and Internals

prefix operators: 1.5. Operators

3. Unary and Binary Operators
metacharacters working as: 5.3. Metacharacters and Metasymbols

$PREMATCH: 28.2. Special Variables in Alphabetical Order

prepending, directories to @INC: 19.1.3. Switches

prepending elements to arrays: 29.2.190. unshift

preprocessing Perl: 24.5.2. Generating Perl in Other Languages

print function: 1.4. Filehandles

1.8. List Processing
24.2.1. Time Efficiency
24.2.1. Time Efficiency
29.2.113. print
implementing to tied filehandle: 14.4.1. Filehandle-Tying Methods

print statements, comma error in: 24.1.1. Universal Blunders

printf function: 3.16. Conditional Operator

24.2.1. Time Efficiency
29.2.114. printf
29.2.162. sprintf
using on tied filehandle: 14.4.1. Filehandle-Tying Methods

printing

arrays of hashes: 9.3.3. Access and Printing of an Array of Hashes

hashes of arrays: 9.2.3. Access and Printing of a Hash of Arrays

multidimensional arrays: 9.1.3. Access and Printing

9.2. Hashes of Arrays
9.4. Hashes of Hashes

multidimensional hashes: 9.4.3. Access and Printing of a Hash of Hashes

9.6.1. Composition, Access, and Printing of More Elaborate Records

nested data structures: 20.2.4. Display

typeglob contents: 20.3.3. Debugger Options

PrintRet option (debugger): 20.3.3. Debugger Options

priority, process: 29.2.57. getpriority

29.2.147. setpriority

privacy: 12.1. Brief Refresher on Object-Oriented Lingo

Perl modules and: 11.2.1. Module Privacy and the Exporter

private methods, ignoring inheritance with: 12.5.5. Private Methods

private objects, closures, using for: 12.7.5. Using Closures for Private Objects

private variables (see local variables)

procedureal programming style: 5.10.3. Programmatic Patterns

procedures: 1.2.2. Verbs

process groups: 16.1. Signals

29.2.55. getpgrp
29.2.146. setpgrp

process ID (pid)

getting process group from: 29.2.55. getpgrp
returning: 29.2.56. getppid
returning with fork: 29.2.40. fork
waitpid function: 29.2.197. waitpid

processes

checking for existence: 16.1.1. Signaling Process Groups

fork function: 29.2.40. fork

functions dealing with: 29.1. Perl Functions by Category

getting group for: 29.2.146. setpgrp

ID (pid): 29.2.104. open

interprocess communication: 16. Interprocess Communication

between processes on same machine: 16. Interprocess Communication
files: 16.2. Files
on the Internet: 16. Interprocess Communication
sockets: 16.5. Sockets
System V IPC: 16.4. System V IPC

killing: 29.2.80. kill

multitasking environments, CPU access: 23.2. Handling Timing Glitches

priority, setting: 29.2.147. setpriority

process model, threads: 17.1. The Process Model

returning priority of: 29.2.57. getpriority

signaling process groups: 16.1.1. Signaling Process Groups

standard input, output, and error in: 1.4. Filehandles

umask for: 29.2.186. umask

variables for: 28.2. Special Variables in Alphabetical Order

waiting for: 29.2.196. wait

zombie: 16.1.2. Reaping Zombies

$PROCESS_ID: 28.2. Special Variables in Alphabetical Order

processing shell commands: 19.1. Command Processing

processor (see CPU)

profiler, Perl: 20.6. The Perl Profiler

profiling, Devel::DProf module: 32.1.13. Perl Language Extensions and Internals

program arguments, shell vs. Perl: 24.1.4. Shell Traps

program name

of perl executable: 28.2. Special Variables in Alphabetical Order
of perl script: 28.2. Special Variables in Alphabetical Order

programming languages, Perl modules for interfacing with or emulating: 22.1. The CPAN modules Directory

programming, Perl: 24. Common Practices

common mistakes by novices, Perl traps, previous versions: 24.1.5. Previous Perl Traps

common mistakes of novices: 24.1. Common Goofs for Novices

efficiency: 24.2. Efficiency

file-manipulating programs, writing portable: 25.3. Files and Filesystems

fluent: 24.4. Fluent Perl

portability: 25. Portable Perl

program generation: 24.5. Program Generation

generating Perl in other languages: 24.5.2. Generating Perl in Other Languages

program generators

other languages in Perl: 24.5.1. Generating Other Languages in Perl
source filters: 24.5.3. Source Filters

programming with style: 24.3. Programming with Style

programming style, patterns: 5.10.3. Programmatic Patterns

$PROGRAM_NAME: 28.2. Special Variables in Alphabetical Order

programs

controlling debugger from: 20.1. Using the Debugger

core dump of: 29.2.29. dump

executing: 29.2.174. system

exiting: 1.1. Getting Started

29.2.35. exit

stepping through with debugger: 20.2.1. Stepping and Running

progressive matching: 5.6.5. Where You Left Off: The \G Assertion

projects, large, benefits of strict pragma in: 1.2.1.4. Simplicities

properties: 12.4.2. Initializers

case, Unicode: 15.2. Effects of Character Semantics
Unicode: 5.4. Character Classes
Unicode database of: 15.2. Effects of Character Semantics

protocols, name/number translations: 29.2.58. getprotobyname

prototypes: 6.4. Prototypes

& (ampersand), omitting from subroutine names: 6.4. Prototypes
built-in functions, emulating: 6.4. Prototypes
careful use of: 6.4.2. Care with Prototypes
closures, giving to: 8.3.7.1. Closures as function templates
implicit pass-by-reference in: 8.1. What Is a Reference?
inlining constant functions: 6.4.1. Inlining Constant Functions

prototyping: 6.4. Prototypes

pseudo-operators, overloading and: 13.3. Overloadable Operators

pseudocommands, piping: 16.3.2. Talking to Yourself

pseudohashes: 8.3.5. Pseudohashes

implementing classes with: 29.2.99. my

inheritance and: 12.7.1. Field Declarations with use fields

simulating with overload function: 13.3. Overloadable Operators

use fields pragma, using with: 12.7.1. Field Declarations with use fields

pseudoliterals (see input operators)

punctuation characters, word boundary matching and: 5.6.3. Boundaries: The \b and \B Assertions

punctuation variables, English module, handling with: 32.1.13. Perl Language Extensions and Internals

push function: 9. Data Structures

29.2.116. push
pop function: 2.3. Built-in Data Types

push-pop (PP) codes: 18.3. Executing Your Code

PV (internal string value): 21.2. Internal Data Types

pwd command (Unix): 24.2.1. Time Efficiency

Python: 2.2. Molecules

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