wok-6.x view flex/description.txt @ rev 21721

updated ptpython (0.28 -> 2.0.4)
author Hans-G?nter Theisgen
date Wed Jun 12 14:57:36 2019 +0100 (2019-06-12)
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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.