+# +deanimate-gifs{last}
+# +deanimate-gifs{first}
+# Deanimate all animated GIF images, i.e. reduce them to their last
+# frame. This will also shrink the images considerably. (In bytes,
+# not pixels!)
+# If the option "first" is given, the first frame of the animation
+# is used as the replacement. If "last" is given, the last frame of
+# the animation is used instead, which propably makes more sense for
+# most banner animations, but also has the risk of not showing the
+# entire last frame (if it is only a delta to an earlier frame).
+#