DEC Text Processing Utility (or DECTPU) was a language developed by Digital Equipment Corporation

Digital Equipment Corporation

Digital Equipment Corporation was a major American company in the computer industry and a leading vendor of computer systems, software and peripherals from the 1960s to the 1990s...

 (DEC) for developing text editor

Text editor

A text editor is a type of program used for editing plain text files.Text editors are often provided with operating systems or software development packages, and can be used to change configuration files and programming language source code....

s. In 1986, DEC developed a new version of EDT

EDT text editor

There are at least two major text editors named EDT. One was made by Digital Equipment Corporation, the other by what was then Sperry Univac, which later became Unisys.-Digital:...

 written in DECTPU. DECTPU is distributed with OpenVMS

OpenVMS

OpenVMS , previously known as VAX-11/VMS, VAX/VMS or VMS, is a computer server operating system that runs on VAX, Alpha and Itanium-based families of computers. Contrary to what its name suggests, OpenVMS is not open source software; however, the source listings are available for purchase...

. It is designed to be used on a terminal or console, so that it is not necessary to have DECwindows installed to use it.

Among other things the Language-Sensitive Editor

Language-Sensitive Editor

LSE is a Language-Sensitive Editor for OpenVMS Operating system. LSE is implemented by using the Text Processing Utility .-External links:*...

 and Extensible Versatile Editor

Extensible Versatile Editor

EVE is a flexible text editor that is part of the VMS operating system. EVE is implemented by using the Text Processing Utility .The Emacs editor features a good EVE emulation ....

are implemented using DECTPU.