bl2seq(1) on Linux
The text e1e3967ed717, as Debian 4.0 (Etch) shipped it.
Basic Local Alignment Search Tool
Flags it lists
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-A -
-F -
-H -
-L -
-N -
-R -
-V -
-c -
-e -
-f -
-i -
-m -
-n -
-o -
-s -
-u