there has been a conversation in the GNU webmasters mailing list www-discuss in which we found that the entry for Flex needed some reviewing to say that this piece of software was never part of GNU but the GNU Project wrote its initial manual and helped distribute it (as seen in the Thank You section of the manual.) Also, change the link to the Flex home page to reflect the actual URL. Some references:
On Jan 11 2020 I submitted a bug report to <firstname.lastname@example.org> but then realized that these entries could be modified by anyone with an account at the fsf.org website, so I went ahead, logged in, and made the changes. I hope it was the right thing to do.
Please talk to <email@example.com> before modifying these changes.
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