DEC Text Processing Utility

DEC Text Processing Utility (or DECTPU)[1][2] was a language developed by Digital Equipment Corporation (DEC) for developing text editors.

In 1986, DEC developed a new version of EDT written in TPU, having released EVE, also a TPU-based editor, by mid-1985.[3]

TPU is distributed with OpenVMS. 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 and EVE (Extensible Versatile Editor) are implemented using DECTPU.

TPU provides text buffer management APIs in concert with Window management APIs which were targeted for the VT-XXX line of terminals. This allowed split screen windows with scrolling and hence multiple views of the same buffer content. There were also key mapping APIs provided allowing a wide range of functionality over all for editing text. A version of the VI editor was created by Gregg Wonderly at Oklahoma State University called TPUVI and also VITPU by some parties. VITPU is still made available for use via the DECUS archives on line.

References
  1. Guide to the DEC Text Processing Utility
  2. "DEC Text Processing Utility Reference Manual". Archived from the original on 2018-05-10. Retrieved 2018-05-09.
  3. User's Guide to EVE AA-Z302A-TE. Digital Equipment Corporation. July 1985. p. ix.
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