Up to now we have examined operating systems: Mac OS, Windows, Unix. Is TEX also an operating system? No. But what is TEX, then? Born in 1978 at the prestigious Stanford University, brainchild of Donald Knuth, one of the greatest computer scientists of the twentieth century, TEX is, all in all, several things at once: a free software system for type-setting, a programming language, a syntax for writing mathematical formulae, a state of mind that often approaches religion. . .[9-1]
[9-1] A religion with, among other things, initiation rites, first and foremost being the correct pronunciation of "TEX", which varies from language to language. In fact, the TEX logo is deceiving: it actually consists of the Greek letters tau, epsilon, chi, the first letters of the word τχνη which means "art" and "technique" in classical Greek. For this reason, the pronunciation of TEX depends on the pronunciation of classical Greek in the language being used, which differs dramatically among speakers of English, French, German, Japanese, and, yes, modern Greek. In English, TEX rhymes with "blecchhh", as explained by Knuth in .
There is no shortage of word processors or desktop publishing software. How does TEX differ from the pack, to the point of deserving two whole chapters in this book?
Well, TEX is an outsider among word-processing systems and desktop publishing software, ...