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TECO - Programming language

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TECO, aka Text editor character oriented, is a programming language created in 1963.

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TECO (; originally an acronym for [paper] Tape editor and corrector, but later Text editor and corrector, then Text editor character oriented) is a text editor originally developed at the Massachusetts Institute of Technology (MIT) in the 1960s, after which it was modified by many other people. TECO was a direct ancestor of Emacs, which was originally implemented in TECO macros.. Read more on Wikipedia...

Example from Riju:
IHello, world! $HT$$
!Hello World in TECO !The $ symbol below wouldn't actually be a printing character - !it's the [escape] character, \u001b! FTHello World$
Example from Wikipedia:
0uz 聽! clear repeat flag聽! <j 0aua l 聽! load 1st char into register A聽! <0aub 聽! load 1st char of next line into B聽! qa-qb"g xa k -l ga -1uz ' 聽! if A>B, switch lines and set flag聽! qbua 聽! load B into A聽! l .-z;> 聽! loop back if another line in buffer聽! qz;> 聽! repeat if a switch was made last pass聽!
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