QED (software)

See also: QED (homonymy)

QED is a text editor line by line.

He was written at the origin by Butler Lampson and L. Peter Deutsch for SDS 940, probably in 1966. Ken Thompson then wrote of it a version for CTSS. This version had the characteristic to introduce for the first time the rational expressions. QED influenced the traditional editor of the systems UNIX the ED, as well as the least popular Sam of Rob Pike. A Canadian version of QED, called FRED (for FRiendly EDitor , “convivial editor”), was written by Peter Fraser within the Université of Waterloo for the system GCOS of Honeywell.

See too

Related articles

  • ED;

  • rational expressions.

External bonds

  • History of QED;

  • FRED, the convivial editor.

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