sed(1) on FreeBSD
The text 43da6931d710, as FreeBSD 2.2.5-RELEASE shipped it.
stream editor
Flags it lists
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-a -
-e -
-f -
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The text 43da6931d710, as FreeBSD 2.2.5-RELEASE shipped it.
stream editor
-a
-e
-f
-n