bibtool(1) on Linux
The text 2ea6b8748896, as Debian 2.2 (Potato) shipped it.
BibTeX file manipulation tool
Flags it lists
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-# -
-@ -
-Ac -
-K -
-M -
-O -
-S -
-X -
-f -
-h -
-i -
-k -
-m -
-o -
-q -
-r -
-s -
-v -
-x