Back in the 90s I had to do some on-the-spot coding to fix a problem on a SGI machine using an ancient green terminal of some kind. It worked, but the keyboard

Back in the 90s I had to do some on-the-spot coding to fix a problem on a SGI machine using an ancient green terminal of some kind. It worked, but the keyboard lacked curly braces {} so I used trigraphs[1] for the first and last time. The fact it worked at all is pretty impressive. There was even a termcap entry for the ancient and crusty terminal. [1] https://en.wikipedia.org/wiki/Digraphs_and_trigraphs#C https://en.wikipedia.org/wiki/Digraphs_and_trigraphs#C