diff --git a/gpl-lgpl.tex b/gpl-lgpl.tex
index 9999a33..9189a10 100644
--- a/gpl-lgpl.tex
+++ b/gpl-lgpl.tex
@@ -3382,12 +3382,11 @@ asymmetrical, because they do not raise the same interpretive
 issues; in particular, additional requirements, if allowed without careful
 limitation, could transform a GPL'd program into a non-free one.
 
-% FIXME-URGENT: integrate
-
-While GPLv2 does not allow for any additional restrictive terms, GPLv3 allows
-for some specific limited variations, thus varying the strict copyleft of
-GPLv2 in the interest of broader compatibility with other licenses.
-% FIXME-URGENT: end
+Due to the latter fear, historically,  GPLv2 did not permit any additional
+requirements.  However, over time,
+many copyright holders generally tolerated certain types of benign additional requirements
+merely through a ``failure to enforce'' estoppelesque scenario.  Therefore, GPLv3 allows
+for some specific limited requirement variations that GPLv2 technically prohibits.
 
 With these principles in the background, GPLv3~\S7  answers the following
 questions: