Timeline of Perl and its Culture, The

1960s 1960 Ted Nelson invents hypertext, known as the Project Xanadu. (Fast forward to 1999.) 1964 The concept of pipes connecting processes is suggested by Doug McIlroy at Bell Labs. See http://cm.bell-labs.com/cm/cs/who/dmr/mdmpipe.html. In Perl the same concept is seen in the default variable $_.