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by Lex-2008 808 days ago
Not sure about $ sign, but ^ probably comes from ADM-3A: https://en.wikipedia.org/wiki/ADM-3A#Legacy

And here is a photo of its keyboard: https://twitter.com/toresbe/status/1756800589340549609/photo...
1 comments
em500 807 days ago
Per the article, these anchors appear in Ken Thompson's port of the QED text editor which dates back to 1970, years before even the ADM-1 terminal.
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