Editing PL (section)

=== Computing and telecommunications ===
==== File formats ====
* <code>.pl</code>, common filename suffix for [[Perl]] scripts
* <code>.pl</code>, common filename suffix for [[Prolog]] programs
* <code>.pl</code>, common filename suffix for [[TeX font metric|TeX font property lists]]

====Programming====
<!--- Procedural Programming would be PP, as Peripheral Processor/CDC 6600, not PL as in PLease delete this! -->
<!--- * [[Procedural programming]], a programming paradigm   ??????? -->
* [[Programming language]]
** [[PL/C]], an instructional dialect of the PL/I computer programming language, developed at Cornell University in the 1970s
** [[PL/I]], a computer programming language developed in the 1960s
** [[PL/SQL]], Oracle's procedural language extension (inception in 1995)
** [[PL/pgSQL]], PostgreSQL's procedural language extension (inception 1998)

====Telecommunication and networking====
* <code>[[.pl]]</code>, country code top-level domain for Poland
* [[PL tone]], a kind of squelching of an audio signal
* [[Packet loss]], one of the three main error types encountered in digital communications
* [[Path loss]], in telecommunication engineering
* [[Presentation layer]], one of the seven layers in the OSI model of computer networking
* [[Digital Private Line]], another form of tone squelching