wok-6.x view flex/description.txt @ rev 22127

updated which (2.20 -> 2.21)
author Hans-G?nter Theisgen
date Mon Nov 04 10:18:57 2019 +0100 (2019-11-04)
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1 Flex is a tool for generating scanners. A scanner, sometimes called a tokenizer,
2 is a program which recognizes lexical patterns in text.