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Hello World

First introduced in the BCPL programming language, "Hello World" is a software program or script that introduce someone to a programming language or for testing a language or its compiler. The few lines of code print the message "Hello World" to the computer screen to give a basic understanding of display text to the screen, how to compile, and run a program or script. Below is an example of how to print "Hello World!" in Perl.

print "Hello World!\n";

Also see: Hello, Programming terms, Programming language