EDT was a text editor that was developed by Digital Equipment Corporation (DEC) for use on its PDP-11 series of computers, and later for its VAX/VMS series as well. Notepad is the standard text editor for Microsoft Windows A text editor is a piece of computer software for editing plain text. ... Digital Equipment Corporation was a pioneering company in the American computer industry. ... Dennis Ritchie and Ken Thompson at a PDP-11 The PDP-11 was a 16-bit minicomputer sold by Digital Equipment Corp. ... VAX is a 32-bit computing architecture that supports an orthogonal instruction set (machine language) and virtual addressing (i. ... OpenVMS V7. ...

The editor contained both line mode commands and a screen based editor. In screen mode, the default action for the user was to directly update text as he or she typed, with special commands available by pressing keypad commands. Arrow keys allowed for simple navigation, while keypad commands allowed for more complex navigation and searches. Users could configure default actions for their editor by placing edt commands in an initialization file which would be executed upon starting the editor.

DEC later developed a powerful language on its VMS systems for designing text editors called TPU, which included an emulator of the EDT screen mode keypad for the benefit of those who were used to using those keys a particular way during their editing sessions. Bold textBold textBold textBold textBold textBold text[ [ Image:DECwindows-openvms-v7. ... Text Processing Utility (or TPU) was a language developed by Digital Equipment Corporation (DEC) for developing text editors. ...