diff --git a/gpl-lgpl.tex b/gpl-lgpl.tex
index d8476a4..747acb9 100644
--- a/gpl-lgpl.tex
+++ b/gpl-lgpl.tex
@@ -2364,6 +2364,11 @@ GPLv2: ``modify'' ``covered work'', ``propagate'', ``convey'', and
 
 \subsection{Modify and the Work Based on the Program}
 
+%  FIXME: I think we actually need to research the claim below that
+%  ``derivative work'' as a term is unique to USA copyright law.  I have
+%  heard German lawyers, for example, use the term extensively.  Is it also a
+%  term perhaps under German law?  -- bkuhn
+
 GPLv2 included a defined term, ``work based on the Program'', but also used
 the term ``modify'' and ``based on'' throughout the license.  GPLv2's ``work
 based on the Program'' definition made use of a legal term of art,